News from Princeton discusses the work of Tom Smith and Bridgett vonHoldt, who have solved a “long-standing finch beak mystery.” The answer turned out to be Mendelian, not Darwinian.
Protein folds show more flexibility than previously thought, but the flexibility appears designed. If it’s hard to get one fold to work, how about two in the same protein?
“Nylon-eating bacteria? What the heck?” you say. “Why does this matter?”
This fascinating study also counters arguments that Homo naledi was beginning to develop a human-like intellect.
“The bombardier beetle’s ancestors simply pressed into different service chemicals that already happened to be lying around. That’s often how evolution works.”