Sperm | Definition, Function, Life Cycle, & Facts | Britannica
https://www.britannica.com/science/sperm
WEBApr 5, 2024 · Sperm, male reproductive cell, produced by most animals. In higher vertebrates, especially mammals, sperm are produced in the testes. The sperm unites with (fertilizes) the ovum (egg) of a female to produce a new offspring. Mature sperm have two distinguishable parts, a head and a tail.
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