Currently,two extant elephant species (X and Y)are placed in the genus Loxodonta,and a third species (Z)is placed in the genus Elephas.Thus,which of the following statements is true?
A)Species X and Y are not related to species Z.
B)Species X and Y share a greater number of homologies than with species Z.
C)Species X and Y share a common ancestor that is still extant (in other words,not yet extinct).
D)Species X and Y are the result of artificial selection from an ancestral species Z.

Question

Quizplus · Accepted Answer

The fact that species X and Y are placed in the same genus suggests that they share a greater number of homologies with each other compared to species Z, which is placed in a different genus. Therefore, option B is the correct answer. Option A is incorrect because species X and Y may still be related to Z through a common ancestor. Option C is incorrect because the common ancestor of species X, Y, and Z may have become extinct. Option D is incorrect because there is no evidence to support the claim that species X and Y were artificially selected from an ancestral species Z.

Currently,two Extant Elephant Species (X and Y)are Placed in the Genus