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  4. At puberty, a female has more than 400,000 immature egg cells in her ovaries. Calculate the percentage of these eggs that will ovulate, assuming that 13 ovarian cycles occur per year in her reproductive life span of 40 years.

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Q. At puberty, a female has more than 400,000 immature egg cells in her ovaries. Calculate the percentage of these eggs that will ovulate, assuming that 13 ovarian cycles occur per year in her reproductive life span of 40 years.

NTA AbhyasNTA Abhyas 2020Human Reproduction

Solution:

At the time of birth, there will be approximately 1 million eggs in the ovary of the female child. By the time of puberty, only about 300,000 remains and other undergo atresia. Around 300 to 400 only will be ovulated during a woman's reproductive lifetime. Hence, the percentage will be around 0.1 to 0.2.