What should you look for when considering whether structures from two kinds of organisms are homologous?
A) The structures should have identical functions in both organisms.
B) The structures should be in different positions on the bodies of the two organisms.
C) The structures should not appear in any close relatives of the organisms.
D) The structures should have similar anatomy in the two organisms.

Question

Quizplus · Accepted Answer

Homologous structures are those that have similar anatomy in different organisms, indicating a common ancestry. Therefore, when considering whether structures from two kinds of organisms are homologous, we should look for similarities in their anatomy. Function, position, and occurrence in close relatives are not reliable indicators of homology.

What Should You Look for When Considering Whether Structures from Two