Which of the following pairs of structures is least likely to represent homology?
A)The wings of a bat and the arms of a human
B)The hemoglobin of a baboon and that of a gorilla
C)The mitochondria of a plant and those of an animal
D)The wings of a bird and those of an insect
E)The brain of a cat and that of a dog

Question

Quizplus · Accepted Answer

The wings of a bird and those of an insect are not likely to represent homology as they have evolved independently in two different groups of organisms and serve different functions. The wings of insects are made up of chitin and are used for flight, whereas the wings of birds are made up of feathers and are also used for flight. The other pairs of structures mentioned in the options are homologous structures as they have a similar structure and function and have evolved from a common ancestor.

Which of the Following Pairs of Structures Is Least Likely