Question

Structures:

Human
Whale
Cat
Bat
Bird
Crocodile
why are this bones considered homologous structures?

Answer 1

This is because the bones have similar ancestries and common traits , though they may be having different function. Homologous structures are organs or bones that appears in different animals, underlying anatomical commonalities showing descent from a common ancestor, that is when very different animals have structures that appear very similar in form and function.