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Fertilization: Quick Facts

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Facts

Also Known As syngamy • fusion

Photos and Videos

Sperm
Diagram of the human female reproductive system showing the journey of an egg from the ovary through the fallopian tube, including fertilization by sperm, cell divisions from one to eight cells, and implantation of the blastocyst in the uterus.
Diagram illustrating the stages of fertilization, showing a sperm approaching and entering an egg. Labeled steps highlight how the acrosome reacts with the zona pellucida, fusion of sperm and egg membranes, entry of the sperm nucleus, and cortical granules preventing further sperm entry.
fertilization of human egg
Follow the development of rice-paddy fish from fertilization to hatching in a laboratory setting
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Key People

Charles Darwin
Charles Darwin
British naturalist
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Christian Konrad Sprengel
German botanist
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Dame Anne McLaren
English geneticist
Beneden, Edouard van
Edouard van Beneden
Belgian embryologist and cytologist
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Frank Rattray Lillie
American zoologist
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Wilhelm Roux
German zoologist
French botanist Gustave-Adolphe Thuret, c. 1867.
Gustave-Adolphe Thuret
French botanist
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Oskar Hertwig
German biologist