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Sperm cell

Definition

noun, plural: sperm cells

A mature male gamete or reproductive cell; spermatozoon.


Supplement

A single sperm cell consists of a round or cylindrical nucleated cell, a short neck, and a thin motile tail. Its structure is vital to its mobility and function (i.e. sexual reproduction). The compacted nucleus contains half of the genetic information. It fuses with an ovum (the female gamete) to form a zygote. In mammals, the sex is determined by the sperm cell. If it bears Y chromosome, the resulting offspring is a male. If X chromosome, the offspring is a female.


Word origin: Greek, from sperma, spermat-, seed + New Latin -zōon, from Greek zōion, zōon, living being.
Related forms: spermatozoal, spermatozoic (adjective).

Also called: spermatozoon, zoosperm.


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About 20 years ago,Murine embryonic stem cells(ES) were first discovered and since then ES have been shown to contribute to ... cloning, which bypasses the need to destroy an embryo produced by the fusion of sperm and egg, which could otherwise develop to term if implanted. Difference between ...

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Thu Jan 29, 2015 6:48 am
 
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Do chromosomses ever get competitive?

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Fri Aug 09, 2013 4:15 pm
 
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