The development of a human being begins with fertilization, a process by which two highly specialized cells, the spermatozoon from the male and the oocyte from the female, unite to give rise to a new organism, the zygote.
A. fertilization takes the first place, fertilization process which occurs naturally within the body or through reproductive technologies outside the body, the overall product in both cases is a diplod zygote.
Actinium Ac Aluminum Al Argon Ar Barium Ba Bismuth Bi Calcium Ca Cobalt Co Gallium Ga Indium In Lithium Li Neon Ne Radium Ra Scandium Sc Silicon Si Xenon Xe
