In which phase of meiosis, the division of primary oocyte is arrested in human beings?

Prophase I

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Metaphase I

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Telophase I

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Anaphase I

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Solution

The correct option is A Prophase I
Oogenesis is the process of formation of haploid ovum (female gamete) from the diploid oogonia by meiosis.

In human beings, oogenesis begins in the foetal stage and gets completed when the secondary oocyte comes in contact with the sperm.

During the foetal stage, the oogonium undergoes mitosis and differentiation to form the primary oocyte.

The primary oocyte starts to divide by meiosis and gets temporarily arrested in the prophase I of meiosis I. This continues till puberty.

After the attainment of puberty, the primary oocyte completes the meiosis I and forms secondary oocyte and first polar body.

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occurs in primary oocyte
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From above

When primary oocyte is arrested ,what is its ploidy?

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