Although modified to perform a different task,a horse's front leg is made up of the same bones as is your arm.This suggests a common ancestor between horses and humans that also had those bones in its forelimb.The horse leg and human arm are therefore considered to be ________ structures.

Question

Quizplus · Accepted Answer

Homologous structures are similar structures that share a common ancestry, although they may have different functions. Since the front leg of a horse and the human arm share the same bones, they are considered homologous structures. Analogous structures perform similar functions but have different structures, while autologous and heterologous structures are not scientific terms related to this context.

Although Modified to Perform a Different Task,a Horse's Front Leg