Fertilization, Oogenesis, and Spermatogenesis


Oogenesis: the formation of female gametes (eggs) in the ovary

 Source: http://biologyandmedicineanimation.blogspot.com/2014/12/oogenesis.html



Spermatogenesis: the formation of sperm cells in the male testis

Source: http://bio1152.nicerweb.com/Locked/media/ch46/spermatogenesis.html

The diagram below summarizes the processes of meiosis, fertilzation, and mitosis. Note that the numbers indicate either the diploid number of chromosomes in cells (46) or the haploid number (23) in gametes.

Fertilization of a female egg by a male sperm