Why are Choanoflagellates Considered to Be the Ancestor of Animals

Question

Why are choanoflagellates considered to be the ancestor of animals?
A)similarities in cell structure
B)similarities in rRNA
C)similarities in DNA
D)similarities in embryonic development

Accepted Answer

Choanoflagellates are considered to be the ancestor of animals due to similarities in cell structure, particularly the presence of a collar of microvilli surrounding a single flagellum, which is similar to the collar cells (choanocytes) found in sponges, one of the simplest animal groups.