問題詳情
61.According to the concept of punctuated equilibrium, the "sudden" appearance of a new species in the fossil record meansI that .
(A)The species is now extinct.
(B)The species will consequently have a relatively short existence, compared to other species.
(C)Speciation occurred over many thousands of years.
(D)Speciation occurred in one generation.
(E)Speciation occurred instantaneously.
參考答案