Biology

Question

hOmologous Structures Worksheet

Learning Objective: Describe how homologous structures provide evidence for evolution.

Instructions: Examine each forelimb and predict which animal it belongs to. Then predict what the

function of the forelimb is.

Anteater

Oso hormiguero

Dolphin

Deifin

Mole

Topo

Pig

Cerdo

limb

Monkey

Mono

Name of Animal

Horse

Caballo

Bat

Murciélago

Function

Answer

The forelimbs of an anteater, dolphin, mole, pig, monkey, horse, and bat are homologous structures that provide evidence for evolution. The function of the forelimbs varies depending on the animal, but generally they are used for locomotion, grasping, and manipulating objects.

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Homologous structures are structures that are similar in different species due to common ancestry. These structures provide evidence for evolution because they show that different species have...