Biological anthropology.
The branch of anthropology that studies the physical characteristics of humans and how humans evolved is biological anthropology.
Biological Anthropology is a branch of anthropology that systematically studies the biological and behavioral aspects of humans using evolution, adaptability (physical characteristics), genetics, and primates. This branch of anthropology depends greatly on discovering the difference and similarities between the biology of humans to that of the primates and also those of primates to other mammals.