Fertilization is a photograph by Russell Kightley/science Photo Library which was uploaded on October 15th, 2019.
Fertilization
Fertilization. Computer artwork of sperm cell fertilizing an egg cell. Each cell contains one half of the genetic material needed to form a new... more
Title
Fertilization
Artist
Russell Kightley/science Photo Library
Medium
Photograph
Description
Fertilization. Computer artwork of sperm cell fertilizing an egg cell. Each cell contains one half of the genetic material needed to form a new human. Only one of some 300 million sperm released during ejaculation will fertilise the single egg. Once it has penetrated, rapid chemical changes make the egg's outer layer (zona pellucida) thicken, which prevents any other sperm entering the egg. The nucleus of the successful sperm fuses with the nucleus of the egg to form a zygote, which will undergo repeated mitosis (cell division) and develop into an embryo.
Uploaded
October 15th, 2019
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