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(updated definition and internal links)
(definition and internal links)
 
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zygote
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'''Definition'''
  
''noun''
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''noun, plural: zygotes''
  
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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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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'''Supplement'''
  
 
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]].
 
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’
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''Word origin:'' from Greek ''zugōtos'' ‘joined’, from ''zugoun'' ‘to join’.
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''Related forms:'' zygotic (''adjective'').
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''Synonym:'' zygocyte.
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<br>''Compare:'' [[embryo]].
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<br>''See also:'' [[copula]], [[zygogenesis]], [[monozygotic twins]], [[heterozygosity]], [[homozygous]].

Latest revision as of 09:36, 25 August 2008

Definition

noun, plural: zygotes

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).


Supplement

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.


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

Related forms: zygotic (adjective).

Synonym: zygocyte.
Compare: embryo.
See also: copula, zygogenesis, monozygotic twins, heterozygosity, homozygous.