Biology 10th Edition by Eldra Solomon,Charles Martin,Diana Martin,Linda Berg

تمرين 7

According to the punctuated equilibrium model,
A) populations slowly diverge from one another
B) the evolution of species occurs in spurts interspersed with long periods of stasis
C) evolutionary novelties originate from preadaptations
D) reproductive isolating mechanisms restrict gene flow between species
E) the fossil record, being incomplete, does not accurately reflect evolution as it actually occurred