Source: Female Reproductive System; Public Domain: http://commons.wikimedia.org/wiki/File:Scheme_female_reproductive_system-en.svg
The process by which the nuclei of a male sperm combines with the nuclei of a female egg.
A mature egg cell.
The process in which semen is ejaculated from the male penis into the female vagina which can result in the fertilization of an egg cell.
The first cell of an individual formed when a sperm cell fertilizes an egg cell.