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Tuesday, January 06, 2009

Hot Talks - Fact or Friction: The Continuous Tension Between Science and Religion

 
University of Toronto
Hart House, The Arbor Room
Wednesday, January 21st, 6:30 PM


Join us for an evening of open discussion on the topic of the tension between science and religion. There will be a reception following the event at 8:30pm. Speakers for the evening include:

Professor Jan Sapp

Professor Sapp is a professor of Biology and History at York University. His research is focused on the fields of cell and molecular biology, microbial phylogeny, symbiosis, genetics, evolution and ecology – all from an historical perspective. His historical research on evolutionary biology aims to enlarge the boundaries of that history from focusing solely on Mendelian genetics and the development of neo-Darwinian evolutionary theory.

Professor Yiftach Fehige

Professor Fehige is an assistant professor at St. Michael’s College and the Department of History and Philosophy of Science. His research focuses on Christianity and science, thought experiments, revelation, and research ethics. Professor Fehige is currently working elaborating a pragmatic account of thought experiments in terms of a naturalistic theory of intuition.

Professor Amanda Peet

Professor Peet is a fellow of Trinity College and teaches both within the college and across other disciplines including the Department of physics. She is a member of the Canadian Association of Physicists, the Canadian Institute for Particle Physics and the American Physical Society. She focuses on understanding the fundamental dynamics of all forces and particles seen so far in Nature, especially gravity.

Professor Michael Bourgeois

Professor Bourgoeis is an associate theology professor at Emanuel college. He focuses on constructive, historical, and contextual theologies — including both formative and alternative theological traditions. His particular interests include the relation of theology to the natural sciences, especially on questions of the origin and destiny of the universe and divine action; and expressions of religious ideas in popular culture.


Get a Job in Newfoundland

 
Memorial University: Departments of Computer Science and Biology

MEMORIAL UNIVERSITY
Tenure-Track Faculty Position in Bioinformatics


The Departments of Computer Science and Biology at Memorial University have each embarked on multi-year renewal programs. Each department currently has more than 20 tenure-stream faculty members, and supports M.Sc., Ph.D. and collaborative graduate programs. For more details, see http://www.mun.ca/biology/Home/ and http://www.mun.ca/computerscience/. Both departments invite applications for a tenure-track position in Bioinformatics, starting no later than September 1, 2009. This will be a joint appointment between the departments. The appointment will be made at the level of Assistant Professor, with the primary appointment in Computer Science, and equal responsibility in both departments, in accordance with the terms of Memorial’s Collective Agreement.

A Ph.D. in Computer Science, Computational Science, Biology, or related fields is required and postdoctoral or equivalent experience is desirable. Applicants should have experience in Bioinformatics, and be keen to do interdisciplinary work between the departments. Applicants should possess a strong research record with outstanding promise for future research, and be able to demonstrate the potential for excellent undergraduate and graduate teaching in Bioinformatics.

Applicants should submit a Curriculum Vitae, statements of research interests, teaching interests and philosophy, and up to three reprints of publications. The application should be accompanied by names of at least three referees of international standing, who are willing to provide letters of recommendation (include details on affiliations, plus phone numbers and email addresses). All material must be received by January 15, 2009; refer to position VPA-COSC-2007-001 in all correspondence, and submit materials to:

Dr. Wolfgang Banzhaf, Head
Department of Computer Science
Memorial University
St. John’s, NL, Canada, A1B 3X5
Email: chair@cs.mun.ca

Memorial University is the largest university in Atlantic Canada. As the Province’s only university, Memorial plays an integral role in the educational and cultural life of the Province of Newfoundland and Labrador. Offering diverse undergraduate and graduate programs to almost 18,000 students, Memorial provides a distinctive and stimulating environment for learning. St. John’s is a very safe and friendly city with great historic charm, a vibrant cultural life, and easy access to a wide range of outdoor activities.

Memorial University is committed to employment equity and encourages applications from qualified women and men, visible minorities, aboriginal people and persons with disabilities. All qualified candidates are encouraged to apply; however, Canadian citizens and permanent residents will be given priority. Partners of candidates for positions are invited to include their resumes for possible matching with other job opportunities.


Get Several Jobs in British Columbia

 
University of British Columbia: Departments of Botany and Zoology

Tenure track biology instructor positions

Closing date: January 15, 2009 at 5pm

The Departments of Botany and Zoology at the University of British Columbia (Vancouver, Canada) are seeking candidates to fill at least four tenure-track Instructor positions to teach in the Biology Undergraduate Program. At least two positions will be in cellular and molecular biology, with the remaining positions open to biologists in any area. Candidates must hold a PhD in Biology, have a broadly integrative perspective on the biological sciences, and be committed to the improvement of biology undergraduate teaching. Postdoctoral teaching and/or research experience is preferred.

Successful candidates will demonstrate 1) evidence of outstanding teaching, and 2) the ability to contribute to ongoing curriculum and course redevelopment.

Duties of the positions vary, but may include lecturing in introductory and advanced courses, teaching and administration of a large third-year undergraduate laboratory course in the area of specialty, participation in course and curriculum development, and the training and supervision of graduate student teaching assistants. There are also opportunities to work in collaboration with the Carl Wieman Science Education Initiative (www.cwsei.ubc.ca).

Interested candidates should submit a letter of application, a curriculum vitae, a statement of teaching philosophy, an outline of teaching interests, evidence of teaching effectiveness, and the names and contact information for at least three individuals who would be willing to provide letters of references to jobs@zoology.ubc.ca. Candidates are particularly encouraged to highlight previous experience in fostering the education of students from diverse backgrounds.

Review of applications will begin January 15, 2009 and continue until the positions are filled, with appointments anticipated to begin by July 1, 2009.

The University of British Columbia hires on the basis of merit and is committed to employment equity. All qualified persons are encouraged to apply; however, priority will be given to Canadian citizens and permanent residents of Canada.


Get a Job in Ontario

 
University of Western Ontario: Department of Biology
The University of Western Ontario
Faculty of Science
Department of Biology

Applications are invited for a 3-year Limited Term position in Biology commencing July 1, 2009. As a minimum, the preferred applicant will have a Ph.D. in Biology or a related field, and appropriate training in University level teaching. The successful applicant will be expected to contribute to the department’s commitment to excellence in teaching and provide evidence of his/her ability to teach at the undergraduate level. The successful candidate will be responsible for participating in the teaching of courses in cell and developmental biology as well as general biology.

Applications, including a curriculum vitae and names and addresses of three referees whom we may contact, should be submitted to:

Dr. M. Brock Fenton, Acting Chair
Department of Biology
The University of Western Ontario
London, Ontario
N6A 5B7

Applications for this position will be accepted until January 31, 2009 or until a suitable candidate is found.

Positions are subject to budget approval. Applicants should have fluent written and oral communication skills in English. All qualified candidates are encouraged to apply; however, Canadians and permanent residents will be given priority. The University of Western Ontario is committed to employment equity and welcomes applications from all qualified women and men, including visible minorities, aboriginal people and persons with disabilities.



Mendel's Stem Length Gene (Le)

The seven traits that Gregor Mendel worked with were: seed shape (R/r), cotyledon color (I/i), seed and flower color (A/a), pod shape (V/v), pod color (Gp/gp), flower position (Fa/fa), and stem length (Le/le). The last trait is also known as Tall (T) and short (t).

The gene responsible for cotyledon color has been identified. It encodes an enzyme that degrades chlorophyll [Identity of the Product of Mendel's Green Cotyledon Gene (Update)]. The gene giving rise to the wrinkled phenotype (r) encodes the starch branching enzyme [Biochemist Gregor Mendel Studied Starch Synthesis].

The gene responsible for stem length has also been identified and cloned (Lester et al., 1997). It encodes an enzyme called 3β-hydroxylase. This enzyme is responsible for one of the last steps in the synthesis of the gibberallin GA1. See Monday's Molecule #102 for the structure of a similar gibberellin.

Gibberellins are plant growth hormones and GA1 is required to stimulate the grown of the stem in pea plants. The wild-type enzyme synthesizes GA1 from its substrate GA20. The pea gene (Le) is related to a similar gene in other flowering plants. Defects in those genes produce dwarf plants.

Lester et al. (1997) cloned the pea gene and identified a restriction length polymorphism that was associated with a mutant version of the gene (le). In the mutant, a single alanine residue was replaced by a threonine residue and this resulted in a 3β-hydoxylase activity that was 20-fold less than the wild type level. The reduced amount of gibberellin GA1 could account for the smaller plants.

The restriction length polymorphism was used as a genetic marker in crosses between Le/Le plants and le/le plants. It segregated with the le genotype as expected. This experiment establishes that the gene for 3β-hydoxylase is the Le gene that Mendel studied and the phenotype is due to differing levels of the plant hormone gibberellin GA1.


Lester, D.R., Ross, J.J., Davies, P.J., and Reid, J. (1997) Mendel’s Stem Length Gene (Le) Encodes a Gibberellin 3β-Hydroxylase. The Plant Cell 9:1435-1443. [PDF]

Monday, January 05, 2009

Darwin Celebrations at the University of Toronto

 
The University of Toronto is hosting a celebration of Darwin next Novermber [Origin of Species at 150: a celebratory conference].
150 Years after Origin: Biological, Historical, and Philosophical Perspectives

Victoria College, University of Toronto, November 21-24, 2009
Darwin wrote in his autobiography, “In July [1837] I opened my first notebook for facts in relation to the Origin of Species, about which I had long reflected, and never ceased working for the next twenty years.” In 1842, he wrote a “very brief abstract” of his theory (35 pages), which in the summer of 1844 he expanded to 230 pages. Beginning in September 1858, after receiving an essay from Alfred Russell Wallace, “On the Tendency of Varieties to Depart Indefinitely from the Original Type,” which outlined the central mechanism of evolution on which Darwin had been working, he began work on completing the manuscript of The Origin of Species by Means of Natural Selection. John Murray, the publisher, launched the book on November 24, 1859 by releasing 1,250 copies. The impact of The Origin of Species has equalled the impact of Newton’s Philosophiæ Naturalis Principia Mathematica. It is the unifying theoretical framework for all modern biology.

November 24, 2009 marks the 150th anniversary of the publication of The Origin and The Institute for the History and Philosophy of Science and Technology, the Department of Ecology and Evolutionary Biology, and the Department of Philosophy at University of Toronto are mounting a Gala Celebratory Conference. The conference will culminate in a gala dinner on November 24 at which participants will toast the tremendous achievement of Charles Robert Darwin.

Five multi-disciplinary symposia have been organized. For each symposium, the panel consists of a biologist, a historian of biology and a philosopher of biology.

The Institute for the History and Philosophy of Science and Technology is located on the elegant, historic Victoria University campus (one of the University of Toronto’s federated universities) and the conference will be held in that location
The emphasis is on history and philosophy. It would be a perfect opportunity to put Darwin into the context of the modern world. It would be a crying shame if the conference was wasted on promoting natural selection and misrepresenting modern evolutionary theory. Do the conference organizers really mean it when they say that a 150 year old book, Origin of Species, is, "the unifying theoretical framework for all modern biology?

Here's the preliminary program.
Saturday November 21, 2009

6-7 pm: Keynote Address: to be announced

7-9pm: Reception

Sunday November 22, 2009

9-10 am: Keynote Address
Evelyn Fox Keller (Massachusetts Institute of Technology)

10 am-12 pm: Symposium:
Gender, Evolution, and Sexual Selection
Lisa Lloyd (Indiana University)
Marlene Zuk (University of California)
Erika Milam (Clemson University)

12-2 pm: Lunch Break

2-3 pm: Keynote Address
Michael Ruse (Florida State University)

3-4 pm: Contributed Papers Session
to be announced

4-5 pm: Contributed Papers Session
to be announced

5-6 pm: Keynote Address
James Moore (University of Cambridge)

Monday November 23, 2009

9-11 am: Symposium:
Evolution and Development
Manfred Laubichler (Arizona State University)
Jane Maienschein (Arizona State University)
Michael Dietrich (Dartmouth College)

11am-12pm: Contributed Papers Session
to be announced

12-2 pm: Lunch Break

2-4 pm: Symposium:
Species
John Beatty (University of British Columbia)
Kevin de Queiroz (National Museum of Natural History)
Marc Ereshefsky (University of Calgary)

4-5 pm: Contributed Papers Session
to be announced

5-6 pm: Keynote Address
Alison Pearn (Darwin Correspondence Project)

6-7 pm: Special Presentation
A Play: "Re: Design (A Dramatisation of the Correspondence of Charles Darwin and Asa Gray)"

Tuesday November 24, 2009

9-11 am: Symposium:
Taxonomy
Mary Winsor (University of Toronto)
Kevin Padian (Berkeley)
Richard Richards (University of Alabama)

11am-12pm

Contributed Papers Session
to be announced

12-2 pm: Lunch Break

2-4 pm: Symposium:
Ecology
Joan Roughgarden (Stanford University)
Gregg Mitman (University of Wisconsin-Madison)
Gregory Cooper (Washington and Lee University)

4-5 pm: Contributed Papers Session
to be announced

5-6 pm: Keynote Address
Sean Carroll (University of Wisconsin-Madison)

6-7 pm: Break

7-8 pm: Keynote Address
Spencer Barrett (University of Toronto)

8-10:30 pm: Origin at 150 Gala Dinner
Most of the speakers are strangers to me. I have no idea where they might be coming from in terms of their understanding of evolutionary theory.

Of the ones I do know, Sean Carroll is a fan of natural selection and Spencer Barrett is a classic adaptationist. It's worrisome that the organizers invited Michael Ruse to give a keynote address. As I've mentioned before, Ruse does not seem to have a very good handle on modern evolutionary theory. I fear that the conference participants will be subjected to a particular point of view that will not be a fair description of how Darwin contributed to modern biology.

If The Institute for the History and Philosophy of Science thinks Michael Ruse is going to give a good overview of Darwin's contribution then this does not bode well for the conference. They should have learned from his appearance at the Royal Ontario Museum last June [Darwinism at the ROM].

At that symposium Ruse asked, "Is Darwin's Theory Past Its "Sell By" Date." I think Michael Ruse has passed his "best before" date. It's time for him to retire.


Darwin Week Activity at CFI

 
I attended a lecture by Carl Zimmer last summer at the Chautauqua Institute [Carl Zimmer at Chautauqua]. He posted the text on his blog at: Darwin, Linnaeus, and One Sleepy Guy.

Here's one of the important bits ...
I’d like to thank the Chautauqua Institution for inviting me to speak during this week’s series. I’m particularly grateful that the Chautauqua Institute saw fit to make this week’s theme Darwin *and* Linnaeus. We are now descending into a frenzy of Darwin celebrations, and you’re not going to escape it until the end of 2009. We’ve got his 200th birthday in February, and the 150th anniversary of the publication of the Origin of Species in November. The spotlight is going to be on Darwin, and Darwin alone.

I think this is a mistake. Darwin deserves celebrating, but that doesn’t mean we should fall prey to a cult of personality. Darwin did not invent biology. Darwin did not even find most of the evidence that he used to back up his theory of evolution. And he certainly did not discover all there was to know about evolution. Biologists have discovered many new things about evolution since his time. In some cases, they’ve challenged some of his most important arguments. And that’s fine. That’s the great strength of science.

So today I’m going to take advantage of our dual celebration of Linnaeus and Darwin. I’m going to talk about the process of science, how great thinkers challenge the thinkers of the past, how their own great ideas are altered by future generations. I’m going to talk about why Linnaeus was so important, and how Darwin shattered some of Linnaeus’s most cherished claims. I’m also going to talk about modern biologists have done the same to Darwin.

The best way to convey how drastically biology has changed since Darwin’s day is to focus on one group of living things. It’s a group about which Darwin–and Linnaeus–had little to say. I’m going to talk about microbes.
Carl was pointing out the obvious. Science has not stood still since 1859, the year that Origin of Species was published. As we approach the celebrations in February and November it's important to keep this in mind. That's why I'm giving a talk about the modern view of evolution and how it builds upon, but differs from, the views of Charles Darwin in 1859.

Come listen ...
Darwin Week Activity: Pre and Post Darwinian Science with Larry Moran

Starts: Friday, February 13th at 7:00 pm

Ends: Friday, February 13th at 9:30 pm

Location: Centre for Inquiry Ontario, 216 Beverley St, Toronto ON (1 minute south of College St at St. George St)

What was science like before Darwin, and how did it change after Darwin?

Larry Moran will be discussing our modern scientific world in light of the impact Darwin and his theory of evolution due to natural selection has had on it.

Larry Moran is a Professor in the Department of Biochemistry at the University of Toronto.

$5, $3 for students and FREE for Friends of the Centre


How Does Your Blood Clot?



Some of you have been following the smackdown of Casey Luskin over his attempt to revive the irreducible complexity of the blood clotting cascade. This is a complicated pathway so I wrote a bunch of postings last year to try and explain the pathway at the molecular level.

Theme

Blood Clotting
Here's the complete list in case anyone wants more information in order to follow the discussion.

March 26, 2007
Monday's Molecule #19. Warfarin—an anticoagulant and a rat poison.

March 27, 2007
Vitamin K. Vitamin K plays an important role in blood clotting.

March 28, 2007
Nobel Laureates: Dam and Doisy. Dam: "for his discovery of vitamin K" Doisy: "for his discovery of the chemical nature of vitamin K".

April 2, 2007
Monday's Molecule #20. Heparin—an anticoagulant.

April 2, 2007
Blood Clotting: The Basics. Fibrinogen and how it forms clots.

April 4, 2007
Nobel Laureate: Arne Tiselius. "for his research on electrophoresis and adsorption analysis, especially for his discoveries concerning the complex nature of the serum proteins".

April 4, 2007
Blood Clotting: Platelets. What are platelets and how do they form blood clots?

April 4, 2007
Blood Clotting: Extrinsic Activity and Platelet Activation. Description of the activity of thrombin and the activation of blood platelets.

April 5, 2007
Blood Clotting: Intrinsic Activity. The role of factors VIII and IX. Deficiencies in Factor VIII cause hemophilia A an X-linked form of hemophilia that was common in European royal families descending from Queen Victoria.

April 8, 2007
Genes for Hemophilia A & B and von Willebrand disease. Locations of the F8, F9 and vWF genes on human chromosomes X and 12.

April 12, 2007
Inhibiting Blood Clots: Anticoagulants. How does heparin inhibit blood clotting?

April 15, 2007
Human Anticoagulant Genes. Mapping the genes for anticoagulant factors.

April 16, 2007
Dicumarol and Warfarin Inhibit Blood Clotting. The role of vitamin K in blood clotting.

September 26, 2007
A Synthetic Anticoagulant Related to Heparin. Synthesis of a new anticoagulant to replace heparin.

April 26, 2008
Fibrin and Blood Clots.
What does a blog clot look like?

May 10, 2008
On the Evolution of the Blood Clotting Pathway.
Ian Musgrave explains Russel Doolittle's latest results.


George Johnson Revists His Defense of Scienc Journalism

 
John Horgan and George Johnson are at it again. They clarify some important points in a followup to their earlier discussion about science journalism (see Who the Heck Is George Johnson?).


John Horgan asks the key question when he says, "Where do we get informed criticism of science these days?"

George Johnson points out that there's a lot of junk on the internet and this includes most science blogs. He does go out of his way to mention the best science blogs but he seems to be surprised and upset at the amount of junk masquerading as legitimate science.

He's right, of course, but that's not the point. What Johnson still seems to ignore is the criticism of traditional print science journalism. I'm not saying that science blogs are perfect—far from it—what I'm saying is that the hubris of science journalists is unjustified. They're not nearly as good as they think they are. As a matter of fact, in my opinion the quality of science on science blogs is superior to the quality of science described by science journalists in the print media.

As a general rule, science journalists are better writers but they are not necessarily better at describing the correct science. It's the content of articles by science journalists that I'm criticizing, not their literary style. I don't think George Johnson gets this. He seems to put all of his emphasis on the literary aspect of science journalism and not enough on the scientific accuracy part of science journalism. Johnson admires good writing.

John Horgan gets it. His main complaint is that it's the scientists, and not the science journalists who are hyping their discoveries and misrepresenting the importance of their work. Horgan points out that scientists are often too deeply immersed in their work to see the big picture. George Johnson is happy to agree with him. I agree too—it's scientists who are behind bad science.1

However, both Horgan and Johnson see themselves as writers who are able to rise above this self-interest on the part of scientists and put things in proper context. According to them, the role of a science journalist is to pick out the real breakthroughs and to present an accurate view of the science, unencumbered by the prejudices and biases of those scientists who are down in the trenches.

I agree that this should be the goal of science journalism. What I expect of good science journalism is that it avoid the hype and put the science in context. In that sense, Horgan and Johnson are correct—they have identified an important role for science journalism.

So, how's it working out? Badly, I'm afraid. Most science journalists who write about the things I know are failing miserably at this important task. Their prose may be good but they are completely taken in by the scientists who exploit them. This would be unacceptable if we were talking about political reporting or the writings of an art critic. It's just as unacceptable when we're talking about science reporting. That's the issue.

While scientists are responsible for bad science in the first place, it also seems to be scientists who recognize bad science. I don't see too many examples of science journalists who recognize bad science. As a group they seem to be very gullible.

Here's the excerpt where Horgan and Johnson discuss the future of science journalism. Horgan is pessimistic and Johnson is more of an optimist. The first part of this excerpt is where Johnson defends the effort that science journalists put into their work. Science journalists may work hard but you don't get "A's" just for effort.


It's interesting to hear Johnson defend Scientific American and Discovery as good examples of science journalism. It's more evidence that he doesn't know the difference between good science and bad science.


1. Listen to the exchange when John Horgan describes evolutionary psychology. Horgan knows that a lot of it is garbage. Johnson doesn't. I think this is part of Johnson's problem. He doesn't seem to have a good feel for the difference between good science and bad science in spite of the fact that he (Johnson) brags about the amount of work that goes into good science journalism and how important it is to have good sources. Johnson seems to think that most articles written by science journalists must be accurate because science journalists are supposed to do their homework. That's a bad assumption.

Monday's Molecule #102

 
Name this molecule. Your task is to identify the molecule and give it a biochemically accurate name (the IUPAC name would be perfect, but it's not required). A Nobel Laureate is associated with this molecule, and similar molecules, because the prize was awarded, in part, for synthesizing them in the laboratory.

The first one to correctly identify the molecule and name the Nobel Laureate wins a free lunch at the Faculty Club. Previous winners are ineligible for one month from the time they first collected the prize.

There are three ineligible candidates for this week's reward: Alex Ling of the University of Toronto, Timothy Evans of the University of Pennsylvania, and John Bothwell of the Marine Biological Association of the UK in Plymouth, UK. John, Dale, and a previous winner (Ms. Sandwalk) have offered to donate their free lunch to a deserving undergraduate so the next two undergraduates to win and collect a free lunch can also invite a friend. Alex got the first one.

THEME:

Nobel Laureates
Send your guess to Sandwalk (sandwalk (at) bioinfo.med.utoronto.ca) and I'll pick the first email message that correctly identifies the molecule and names the Nobel Laureate(s). Note that I'm not going to repeat Nobel Laureate(s) so you might want to check the list of previous Sandwalk postings by clicking on the link in the theme box.

Correct responses will be posted tomorrow. I reserve the right to select multiple winners if several people get it right.

Comments will be blocked for 24 hours. Comments are now open.

UPDATE: The molecule is gibberellin A3 (GA3), a plant hormone. The Nobel Laureate is Elias Corey. The winner is, once again, Dima Klenchin of the University of Wisconsin. Congratulations Dima.


Sunday, January 04, 2009

The Open Laboratory 2009

 
The best science postings have been selected for the 3rd edition of The Open Laboratory. See the results: The Open Laboratory 2008 - and the Winners are......

There are 50 articles. This year the number of postings from the SEED consortium is only 20% of the total, indicating that there are a lot of other science blogs out there.

Out of the eclectic mix I picked the few that discussed evolutionary biology or the molecular biological sciences. Here they are.

Important new flu paper in Cell: part I

Detecting natural selection: a pika's tale

Space Invader DNA jumped across mammalian genomes

Finches, bah! What about Darwin's tomatoes?

Biochemistry of Halloween: Installment 1



What Does Your Genome Sequence Reveal?

 
John Hawks has some interesting comments about your DNA. What does it actually tell you about your risk of dying or inheriting some nasty symptoms? What would a third party do with your genome scan? Will newspapers publish the results of secretly obtained genetic information from politicians and other famous people?

Would that be an invasion of privacy? Of course it would.

Read Privacy, politicians, and genetic testing.



Thursday, January 01, 2009

Top Ten Evolution Articles from New Scientist

 
In my opinion, New Scientist is the best of the current crop of science magazines for the general public, although, in all honesty, the competition is not very challenging.

New Scientist has published Darwin's dangerous idea: Top 10 evolution articles. Most of them are fairly respectable. The main exception is an article on epigenetics [Rewriting Darwin: The new non-genetic inheritance]. That article is an embarrassment.

One of the best articles is Evolution: 24 myths and misconceptions. I've already posted my kudos at: Evolution: 24 myths and misconceptions. One of the nicest things about the series of articles is their description of random genetic drift as an important player in evolution; for example, Evolution myths: Natural selection is the only means of evolution.

Which brings me to the last article in the top ten list: Freedom from selection lets genes get creative. Here's what it says about random genetic drift.
Natural selection, first identified by Charles Darwin in On the Origin of Species, occurs when genetic mutations cause changes in the body and behaviour of an animal that affect its ability to survive and pass on its genes. Some mutations will have positive effects, others may kill an animal outright or somehow affect its offspring's ability to survive and reproduce. Harsh climates, sparse food and relentless predators destroy many individuals, leaving only those that survive best under exactly those pressures. As a result, the more intense the pressure of natural selection, the tighter the fit between a species and its niche.

So, what happens when the pressure is off? You might think there would be little impetus to adapt, so that species would pretty much stay the same. Not so, says Deacon. Animals still change because genes mutate all the time. The constant rewriting of DNA supplies the raw material from which natural selection picks its winners and losers, and when selection is relaxed, the process of weeding out is less ferocious. Instead, a process called genetic drift kicks in as mutations proliferate and animals with a much wider variety of traits are able to survive and reproduce. Some of the classic traits of a species may be lost, while others can arise for no reason other than that it simply doesn't matter if they do.
Close, but it doesn't quite merit a cigar. Drift does not "kick in" when selection pressure is lifted. Drift occurs all the time. It even competes with natural selection.

And while it's partially true that, "the more intense the pressure of natural selection, the tighter the fit between a species and its niche" it's also true that intense "pressure" increases the chance of extinction.

It seems strange that popular journals can publish articles about evolution that disagree with each other and nobody (editors?) seems to notice.


Happy New Year

 
This is a year to celebrate Charles Darwin and evolution. In order to start off on the right foot here are some simple1 thoughts from our Intelligent Design Creationist friends over at Uncommon Descent [TEN THOUGHTS DARWINISTS NEED TO PONDER BEFORE BREAKFAST].
As we head into the new year and the impending Darwin bi-centennial on February 12th, we’re sure to be regaled with story after story of the wondrous things that Darwinian evolution hath wrought. A friend e-mailed the following to me, and with his permission, I reproduce it here below the fold. Perhaps pondering some of these questions might bring some balance to what is otherwise sure to be a lopsided Darwin love-fest for the next couple of months. The original of this can be found at the University of California Santa Barbara Veritas Forum website.
  1. Evolution by natural selection is more plausible in a theistic world than an atheistic world.
  2. Darwin never accounted for the arrival of the fittest. Naturalism’s god-of-chance is always called upon to do the job.
  3. Science rules out the possibility that natural processes might prevent major evolutionary change simply by definition because biological stability and conservation would imply that creation events had taken place since the creation of the universe.
  4. Creation preceded Evolution anyway.
  5. Edward Blyth described the process of natural selection well before Darwin and Wallace. He concluded that it acted as a force of conservation eliminating deterimental variations from populations.
  6. Darwin admitted that based upon the data published in his Origin of Species, one could come to “directly opposite” conclusions. For example, natural selection can prevent major evolutionary change from occurring on a gradual step-by-step basis by eliminating useless transitional stages thus explaining the lack of transitional sequences leading to all of the major body plans (phyla) in the fossil record.
  7. Natural selection better describes biology’s “ordinary rules of stability” than major evolutionary change.
  8. Darwinian theory predicts a pervasive pattern of natural history that is upside-down from the pattern found in the fossil record.
  9. Natural history is more compatible with progressive creation than Darwinian evolution.
  10. The ultimate origin of Nature itself cannot be natural. Either Nature or a Natural Law Giver has always existed. Nature has not always existed. What do you conclude?
All these questions, and more, will be answered at the Darwin 2009 Festival in Cambridge, July 5-10, 2009. Speakers include Sir David Attenborough, Dr. Matt Ridley, Lord John Krebs, Professor Steve Jones, Dame Gillian Beer, Lord Robert May, Richard Dawkins, Professor Dan Dennett, Ian McEwan and AS Byatt.

Is anyone from North America interested in going?


1. I use the term very literally.

Another Way of Knowing?

Thanks to one of our favorite IDiots, Michael Egnor, we now have an answer to an important question. The question is whether there are ways of knowing other than science (evidence + rationalism). Egnor's answer is .... wait for it .... subjective experience! [My Challenge to Dr. Novella: The Materialist Color Tutor’s Dilemma].
Imagine a tutor who specializes in teaching children about color. He’s a materialist, named…Steve. He knows all that is known about color. He knows the physics, the optics, the chemistry, the neurobiology, everything. A family retains him to teach their child, a prodigy, all that can be known about color.

Tudor Steve goes to work. He teaches the little genius about quantum mechanics with relevant application of string theory to flesh out the more subtle issues, then goes on to teach the precocious child chemistry, optics, neurobiology, all of the material and physical facts about color. The child excels in color class in school, acing all of the exams on the physics and the chemistry and the neurobiology.

Then, one day, the boy confides in tutor Steve: the child is color-blind. He has learned all of the physical facts about color, but he has no idea what color looks like. He knows that tutor Steve is a materialist, so he assumes that all there is to know about color can be explained from a materialistic standpoint, including what color looks like. That’s why the child’s parents hired Steve the materialistic color tutor.

So the boy asks tutor Steve:

"Please explain to me what color looks like."

Materialist color tutor Steve has a dilemma. Material facts about color can, of course, be taught. But can ‘what it is like to see color,’ the subjective experience of color, be taught? If it can’t, then there is knowledge of color that is not material knowledge. Therefore materialism cannot completely explain the subjective experience (the qualia) of color. Therefore subjective experience is something in addition to matter. And therefore dualism is necessary to explain the mind.

How would materialist tutor Steve explain what color looks like to a person who is color blind?
That's a tough question all right. But it's only one of many difficult questions of this type. Here are some others that Michael Egnor might want to ponder.
  • How do you explain intelligence to someone who is stupid?
  • How do you explain what it's like to be abducted by UFO's if you've never been kidnapped by aliens?
  • How does a bat explain echolocation to a human?
  • How do you explain astrology to someone who doesn't know their birthday?
  • How do you explain love, or anger, to someone who has never been angry or in love?
  • How do you explain homeopathy to someone who has never been cured by drinking water?
  • How do you explain Canada to someone who has never been there?
  • Where are the weapons of mass destruction?
  • Does Michael Egnor exist?
Hands up, all those who think these questions reveal non-scientific ways of knowing about the truth? How many think that human feelings and emotions cannot be explained by science and scientific reasoning? Has Michael Egnor proved that UFOs astrology homeopathy God exists?