Question

bats frogs crocodiles and dogs all have a bone called humerus in their forelimbs. what does this suggest about their ancestry

Answer 1

This shows that these animals ancestors were related to each other at one point in time

Answer 2

This shows that these all have come from similar ancestry because of their analogous structure.

Step-by-step explanation:

Analogous is defined as body parts that have similar functions but not similar structures like wings in birds, insects, etc.

According to this question, bats, frogs, dogs and crocodiles all possess forelimbs of various shapes. But, those various forelimbs have the same set of homologous bones that are the humerus, the radius and also the ulna.