. How many polar bodies are formed from an ovum before fertilization-


A.         1         

B.         2         

C.         3         

D.         4

Best Answer

A. There may be either one or two inside the ovum, usually two. During meiosis, a diploid oocyte replicates its DNA once and divides twice. One product of these divisions will continue to develop into an ovum; the others become polar bodies. The first polar body is one of the two products in the first stage of meiosis and is diploid, whereas the second polar body contains only one chromatid and is haploiD.

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