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Difference between revisions of "Zygote"

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(updated definition and internal links)
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zygote
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zygote  
  
(Science: biology, genetics) A [[single]] [[diploid]] [[cell]] resulting from the [[fusion]] of [[male]] and [[female]] [[gametes]] at [[fertilization]] ([[sperm]] and [[ovum]]).
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''noun''
The cell resulting from the union of an ovum and a spermatozoon (including the organism that develops from that cell).The fusion of two haploid gametes with the consequential creation of a diploid zygote cell, which can raplidy multiply after this fertilisation of fusion of genetic material occurs.
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a [[cell]] in [[diploid]] state following [[fertilization]] or union of [[haploid]] [[male]] [[sex cell]] (e.g. [[sperm]]) and [[haploid]] [[female]] [[sex cell]] (e.g. [[ovum]]).  
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To be precise, zygote is the term used to refer to the [[cell]] as a result of the fusion of two [[haploid]] nuclei during [[fertilization]] until the first [[cleavage]].  When the zygote starts to divide and multiply, it is called an [[embryo]].
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Also called zygocyte
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Word origin: from Greek zugōtos ‘joined’, from zugoun ‘to join’

Revision as of 09:50, 8 May 2008

zygote

noun

a cell in diploid state following fertilization or union of haploid male sex cell (e.g. sperm) and haploid female sex cell (e.g. ovum).

To be precise, zygote is the term used to refer to the cell as a result of the fusion of two haploid nuclei during fertilization until the first cleavage. When the zygote starts to divide and multiply, it is called an embryo.

Also called zygocyte

Word origin: from Greek zugōtos ‘joined’, from zugoun ‘to join’