The idea that random genetic mutations lead to wondrous, creative innovations is so influential that it forms the premise of a movie franchise, X-Men, that has grossed $6 billion.
Researchers at Uppsala University describe the challenge they face — and that standard Darwinian processes had to face.
It was interesting to see fellow University of Chicago biologist Jerry Coyne casually shoehorn Thornton into a Washington Post review of Darwin Devolves.
Of course finches don’t multiply and cycle through generations as rapidly as bacteria. Still, these birds have been isolated on the iconic islands for some 2 million years.
Lenski agrees that the beneficial mutations seen in his Long Term Evolution Experiment are overwhelmingly degradative or loss-of-function ones.