The development of the embryo is noe genitalia-focused, although they are not formed, there are already internal differences between female and male parts.
Read the full article on: The Twelfth Week of Pregnancy ( 46).
By Cristina Mestre Ferrer B.Sc., M.Sc. (embryologist) and Sandra Fernández B.A., M.A. (fertility counselor).
Last Update: 07/16/2014