Presumably there are steps between the two with an intermediate state that mostly tended to make sense at each step. Anyway, there are tons of people looking for the evidence of fossils to back fill this theory.
“Presumably there are steps between the two with an intermediate state that mostly tended to make sense at each step. Anyway, there are tons of people looking for the evidence of fossils to back fill this theory.”
In my wildest imagination I can’t figure out how partial evolution of a leg might produce some kind of survival advantage whereby it would be kept by the selection process because it might be of use to the organism further down the road.