Dictionary » O » Ootid



noun, plural: ootids

The haploid female sex cell that results from the process of ootidogenesis, which is when the secondary oocyte (or first polar body) divides or completes meiosis II.


In humans, the secondary oocytes are arrested at metaphase II of meiosis II until the time that fertilization has started. At fertilization, the secondary oocytes complete the remaining stages of meiosis II resulting in the formation of an ootid and an ovum. (Also at this time the first polar body divides meiotically giving rise to two polar bodies).

See also: secondary oocyte

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Sporophyte, spermatogenesis and oogenesis?

... chromatid oogonia- s phase has not occured?- 46 chromosomes and 46 chromatid primary oocyte- s phase has occured so 46 chromatid and 92 chromatid? ootid and the polar bodies are each haploid with 23 chromosome and 23 chromatid? --------------------------------------… Lastly angiosperm - sporophyte...assuming ...

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by jacobamark99
Fri May 27, 2011 5:38 pm
Forum: Genetics
Topic: Sporophyte, spermatogenesis and oogenesis?
Replies: 0
Views: 4242


can any body plss tell me abt the external membrane of an ootid???

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by chetanladdha
Wed Nov 23, 2005 1:06 pm
Forum: Molecular Biology
Topic: gamete
Replies: 0
Views: 1191


can any body plss tell me abt the outer coverings of an ootid??? thanks lot in advance

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by chetanladdha
Fri Nov 18, 2005 12:30 am
Forum: Molecular Biology
Topic: reproduction
Replies: 0
Views: 1436

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