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Spermatocyte

Definition

noun, plural: spermatocytes

A male gametocyte derived from a spermatogonium, and gives rise to haploid spermatids through meiosis.


Supplement

The spermatocytes are found in the male gonads of sexually reproducing organisms. In humans, they are found in the seminiferous tubules of the testis. They carry out meiosis to produce spermatids, which in turn give rise to mature sperm cells.

The spermatocytes are of two forms: the primary and secondary. The primary spermatocytes carry out meiosis I giving rise to secondary spermatocytes. The secondary spermatocytes perform meiosis II giving rise to haploid spermatids.

The spermatocytes are the male counterpart of oocytes in female.


Compare: oocyte
See also: spermatidogenesis, meiosis


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Re:

... in Hymenopteran males (Haploid or Diploid) is unusual. The meiosis never take place in their gonads. But the mitotic process by which primary spermatocyte divides is unequal cytoplasmic division. It gives rise to a Spermatide and one polar body. Each spermatogonial cell divides mitoticaly ...

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by Squirrell
Mon Feb 20, 2012 8:38 pm
 
Forum: Zoology Discussion
Topic: Cell identification - germ cells in haploid male ants
Replies: 4
Views: 5424

Cell identification - germ cells in haploid male ants

... in Hymenopteran males (Haploid or Diploid) is unusual. The meiosis never take place in their gonads. But the mitotic process by which primary spermatocyte divides is unequal cytoplasmic division. It gives rise to a Spermatide and one polar body. Each spermatogonial cell divides mitoticaly ...

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by sachin
Sat Feb 18, 2012 8:08 am
 
Forum: Zoology Discussion
Topic: Cell identification - germ cells in haploid male ants
Replies: 4
Views: 5424

DNA count in meiosis

How do I calculate the DNA value in each stage including G1, S, and G2 in spermatocyte?? Is it the same as chromosome count?

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by hannahzarzar
Wed Nov 23, 2011 11:23 am
 
Forum: Cell Biology
Topic: DNA count in meiosis
Replies: 1
Views: 953

Sporophyte, spermatogenesis and oogenesis?

... and 46 chromatid..because chromosomes have not yet entered s phase? spermatogonial stem cells- still 46 chromatid and 46 chromosomes primary spermatocyte- s phase has occured so 46 chromosome and 92 chromatid? --------------------------------------… oogenesis primordial germ cell= 46 chromosomes ...

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by jacobamark99
Fri May 27, 2011 5:38 pm
 
Forum: Genetics
Topic: Sporophyte, spermatogenesis and oogenesis?
Replies: 0
Views: 3625

Gamete Formation Definition?

... cell forms a total of 4 sperm ". However, also following the definition of spermatogenesis: spermatogonium -->(mitosis) 2 primary spermatocytes 2 primary spermatocytes -->(meiosis I) 4 secondary spermatocytes 4 secondary spermatocytes --> (meiosis II) 8 spermatids development.... ...

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by jellyksong
Fri Apr 22, 2011 6:02 pm
 
Forum: General Discussion
Topic: Gamete Formation Definition?
Replies: 1
Views: 11487
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