Question

All of the following pairs are homologous EXCEPT

A) a humans arm and a birds wing (I put this one put she said it was wrong)
B) a birds wing and a whales flipper
C) a cats forelimb and a humans arm
D) a birds wing and a butterfly's wing

Answer 1

Homologous structures have a common evolutionary origin. In the given options, all pairs are homologous except the human's arm and bird's wing, which are analogous structures.

Step-by-step explanation:

Homologous structures are structures that share a similar embryonic origin, indicating a common evolutionary past. In the given options, all pairs except A) a human's arm and a bird's wing are homologous. The human arm and bird wing are analogous structures because they have a similar function of movement, but they have different origins and evolutionary history.

For example, the upper forelimbs of humans and cats have similar structures because they share a common ancestor. Similarly, the bird wing and whale flipper are homologous structures because they have a common evolutionary past. The butterfly wing and bird wing are analogous structures because they have a similar function of flight, but they do not share a common embryonic origin.