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Describe the secondary oocyte formation within a Graffian follicle?

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anat-n-phys | (Level 1) Honors

Posted June 2, 2013 at 2:32 AM via iOS

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Describe the secondary oocyte formation within a Graffian follicle?

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orchid101 | College Teacher | (Level 1) Associate Educator

Posted June 5, 2013 at 4:34 PM (Answer #1)

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Each primary oocyte undergoes two maturation division, first meiotic and the second meiotic. In the first meiotic division, the primary oocyte divides into two very unequal haploid daughter cells-a large secondary oocyte and a very small first polar body or polocyte. In the second maturation division, the first polar body may divide to form two second polar bodies. The secondary oocyte again divides into two unequal daughter cells, a large ootid and a very small second polar body. The ootid grows into a functional haploid ovum. Thus from one oogonium, one ovum and three polar bodies are formed. The ovum, is the actual female gamete.

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