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Polar body

Definition

noun, plural: polar bodies

The cell that results from the asymmetric division of an oocyte.


Supplement

In animals and humans, polar bodies are produced after every meiotic division. They are relatively smaller in size due to less cytoplasm compared to the gametocyte that will become the ovum. This is essential so that much of the cytoplasm is available and the chromosomal content is halved at the time of fertilization. The polar bodies will eventually degenerate.

In plants, the polar bodies may also be fertilized by a sperm cell (aside from the ovum fertilized by another sperm cell). The fertilized polar bodies will develop and give rise to the endosperm while the fertilized ovum will become the plant embryo.


Also called: polar cell


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Bear vs Gorilla Stand-Off. Who would win?

... obviously there are a lot of factors to take into consideration. A polar bear would have a slight advantage to puncture wounds seeing it has ... most powerful primate on the planet with an extremely powerful upper body like hymenoptera7 says and an enormously powerful maxilla. The polar ...

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by vk4vfx
Fri Sep 28, 2012 10:10 am
 
Forum: Zoology Discussion
Topic: Bear vs Gorilla Stand-Off. Who would win?
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Views: 19365

Re: Bear vs Gorilla Stand-Off. Who would win?

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by hymenoptera7
Wed Sep 19, 2012 3:51 am
 
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Sat Sep 15, 2012 6:45 pm
 
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I haven't found any further reference on disappearing polar body in male. I need to search more on this.

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by sachin
Sat Mar 10, 2012 5:03 am
 
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Re:

... is unequal cytoplasmic division. It gives rise to a Spermatide and one polar body. Each spermatogonial cell divides mitoticaly and equally to form 2 primary spermatocyres ...

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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
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