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Convergent Genetic Evolution: “Surprising” Under Unguided Evolution, Expected Under Intelligent Design
A recent article in Trends in Genetics, “Causes and evolutionary significance of genetic convergence,” addresses the apparently “convergent” appearance of genes or gene sequences and how unguided evolution can explain this. The paper defines convergence as the “independent appearance of the same trait in different lineages.” Thus, genetic convergence is the independent appearance of the same genetic trait in different lineages. The article starts by explaining how widespread convergent evolution is: The recent wide use of genetic and/or phylogenetic approaches has uncovered diverse examples of repeated evolution of adaptive traits including the multiple appearances of eyes, echolocation in bats and dolphins, pigmentation modifications in vertebrates, mimicry in butterflies for mutualistic interactions, convergence of some flower traits in plants, and multiple Read More ›
Designed, Yes — Just Not by God: The Remarkable Implications of Clarke’s Third Law
In public debates (and personal discussions) with Michael Shermer and Massimo Pigliucci, I’ve met an argument, advanced by both skeptics, which opens interesting and largely unexplored territory in the ID vs. naturalism controversy. In a new article, the science writer and astronomer John Gribbin steps into the same territory, a speculative region familiar to fans of science fiction, not to mention philosophy students with time on their hands and imaginations liberated (perhaps) by alcohol. Back in my early teens, when I lived on a steady diet of science fiction and first saw Stanley Kubrick’s masterpiece 2001: A Space Odyssey, I could have discussed these ideas well into the night. A short blog post will have to suffice today. This figure Read More ›
How Not to Defend Darwin on “Survival of the Fittest”
Evolutionary biologists make poor historians, especially when it comes to Charles Darwin. So intent on preserving the reputation of St. Charles, evolutionists typically do their best to paper-over Darwin’s less-than-savory views on issues like race or the application of natural selection to society. British biochemist and theistic evolutionist Denis Alexander runs true to form in a newly posted interview at BioLogos. In the interview, Alexander does his best to disassociate Darwin from the idea of “survival of the fittest,” noting that the phrase was coined by Herbert Spencer rather than Charles Darwin, and that it was then picked up by nasty politicians like Kaiser Wilhelm and Adolf Hitler, who used it to promote their noxious views. Alexander is correct that Read More ›
Eric Hoffer’s Skepticism About Darwinism
ENV is pleased to welcome guest blogger Tom Bethell, a senior editor of The American Spectator and author of The Politically Incorrect Guide to Science (Regnery) and other books. Many years ago I interviewed Eric Hoffer (1898-1983), and may have been the last journalist to do so. Widely known as the Longshoreman Philosopher, he was for years a member of the dockers’ union in San Francisco, but his views were not those of your typical stevedore. He had published The True Believer in 1951, and more books after that. Impressed by the breadth of his mind and the unconventional nature of his opinions, I wrote and asked if I could come and interview him. That was in 1980. He invited Read More ›
If Darwinian Evolution Can’t Fix Broken Genes, How Can It Create New Ones?
The Darwinian model of evolution holds that one of the key mechanisms of evolutionary innovation is the duplication of genes and the subsequent divergence of one of the duplicate copies to undertake a new functional role. Because a probability of a single gene stumbling upon a significantly different (yet functionally advantageous) sequence is so small, the idea is that, following a duplication of a gene, one copy is able to retain the original function, while the other is free to explore the vast sea of combinatorial possibilities in search of some novel function. It is widely believed that a duplicate gene has no phenotypic cost or advantage associated with it – that is, it is selectively neutral. In such a Read More ›