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Evolution

Evolving Metamorphosis: A Hopeless Task

Your job is to explain insect metamorphosis in evolutionary terms. What will you say? We can learn from the example of two geneticists who basically said the process is "evolutionarily conserved" -- that is, not evolved! Read More ›
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Blood vessels. Circulatory system. Veins and arteries. Generative AI.
Image Credit: Klemenso - Adobe Stock

Fact-Checking Wikipedia on Common Descent: The Evidence from Comparative Anatomy

The argument from evolutionary developmental biology and embryonic development is probably one of the stronger for common descent. But I'm not convinced. Read More ›

Corticosteroid Receptors in Vertebrates: Luck or Design?

Based on new research by Joseph Thornton and Sean Carroll and colleagues, it increasingly appears that either we are very lucky or we are intelligently designed. Read More ›

(Not) Making the Grade: An Evaluation of 22 Recent Biology Textbooks and Their Use of Selected Icons of Evolution

Unfortunately, as this review has made clear, biology textbooks have a long way to go. Parents, students and educators who seek accuracy and objectivity in evolution-education will have to continue to be a "royal pain in the fanny" of textbook publishers. Read More ›
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common descent
Image Credit: Sung Hwan Kim - Adobe Stock

Fact-Checking Wikipedia on Common Descent: The Evidence from Comparative Physiology and Biochemistry

It is important, in evaluating these arguments, that one consider all the evidence: not just the evidence that is consistent. It seems to me that when this is done, the arguments for common descent -- certainly in its universal sense -- are, at best, inconclusive. Read More ›

The English Translation of “New Work by Thornton’s Group”

Turning a protein shaped to do one particular job into a protein that does just a slightly different job (which most biologists, including myself, had thought would be as easy as pie) turned out to be much more difficult than expected. Read More ›

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