Question

what is oogenesis ?
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Answer 1

Answer :-

• In general terms, Oogenesis can be defined as the process of maturation of the reproductive cells in the ovaries.

Extra Information :-

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• Basically, Oogenesis is similar to the process of "Spermatogenesis.

• Oogenesis includes- Phase of multiplication, Phase of growth and Phase of maturation.

• During the phase of multiplication, the primordial cells in the ovary divide mitotically to form Oogenia.

• Oogenia are also known as "Egg mother cells".

• Each Oogonium divides mitotically to form two primary "Ooyocytes".

• Primary Ooyocytes undergo growth.

• During the phase of maturation, the primary Ooyocytes (2n) undergo meiosis I, producing two haploid cells (n).

• The larger haploid cell becomes the secondary Ooyocyte.

• The smaller haploid cell becomes the first polar body.

• Meiosis II of the secondary Ooyocyte results in the formation of functional eggs (ovum) and a second polar body.

• In Oogenesis, only one of the four products of meiosis becomes a functional egg. The rest three products of meiosis are the non-functional polar bodies which finally get degenerated.

Answer 2

Oogenesis, in the human female reproductive system, growth process in which the primary egg cell (or ovum) becomes a mature ovum. ... These cells, known as the primary ova, number around 400,000. The primary ova remain dormant until just prior to ovulation, when an egg is released from the ovary.

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