試題詳解

62. Hypothetical mutation in a squirrel population produces organisms with eight legs rather than four. Further, these mutant squirrels survive, successfully invade new habitats, and eventually give rise to a new species. The initial event, giving rise to extra legs, would be a good example of
(A) punctuated equilibrium.
(B) species selection.
(C) habitat selection.
(D) changes in homeotic genes.
(E) allometry.