Some of the physical traits that connect anatomically modern humans with their mammalian ancestors?

Question

Can someone briefly describe some of the physical traits that connect anatomically modern humans with their mammalian ancestors, then their primate ancestors?

Answer 1

To Mammals - hair, warm bloodedness, live birth, mammary glands (mammals... mammary glands.....).

To primate ancestors - bipedalism, life history (puberty, life expectancy, etc.), opposable thumbs, tool usage, brain size,  there's so much.... I know I'm forgetting a lot.

Answer 2

I'm guessing for a science Homework? Or just curiosty? Doesn't matter. I'm an eigth grader but I go to some of the best school systems in my state and I'm quite good at science so whether or not you choose to comprehend my sayings is of no concern to me. Anyway, as with either mammalian or primate ancestors, we all share a common walking stance and/or backbone functionality.