Question

How do homologous structures suggest a common ancestor?

Answer 1

Homologous structures are organs or skeletal elements of animals and organisms that, by virtue of their similarity, suggest their connection to a common ancestor. These structures do not have to look exactly the same, or have the same function. The most important part, as hinted by their name, is that they are structurally similar

Answer 2

homologous chromosomes have the identical characters as of parent cell therefore they suggest a common ancestor