What is a hardened sediment that contains the impression of a bone

so whats the answer

the correct answer is sex-linked recessive.

i just took the test

fumikage isn't really a bird, and tsuyu does have teeth. tsuyu has a transformation quirk which still allows her to be partially human. otherwise we'd have a large frog running around. fumikage has teeth because again, he isn't a bird. his head was a quirk mixture if i'm correct.