Question

For a structure to be considered homologous it must...
A.have had function in an ancestor but no function for modern organisms.
B.look similar among multiple organisms that are unrelated.
C.have a version of it appear in a common ancestor of all the organisms that contain the structure
. D. never appear in the fossil record prior to modern day organisms.

Answer 1

C will be the right answer

homo means same and in A & B option there is a if or else type statement and D is not type statement. So, C is the answer.