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Polar Body
(redirected from Polar bodies)

   Also found in: Dictionary/thesaurus, Medical, Legal, Financial, Wikipedia 0.01 sec.
polar body [′pō·lər ‚bäd·ē]
(cell and molecular biology)
One of the small bodies cast off by the oocyte during maturation.

Polar Body 

(also polocyte), in animals, a formation containing nuclear material and a small amount of cytoplasm. The polar bodies separate from the oocyte in the first and second meiotic divisions and subsequently degenerate.



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Of the 120 total eggs counted in control treatments, none of the eggs without incorporated sperm formed polar bodies because of spontaneous egg activation.
The chromosomes of polar bodies provide an indication of whether the corresponding egg is normal or abnormal; if the polar bodies have the wrong number of chromosomes, so does the egg.
Cleavage began after discharge of the polar bodies, the first and second one being along the vertical axis of the egg (stages 4&5) and the third in the horizontal plane just above the axis (Fig.
 
 
 
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