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Birth defects are more common among chil...

Birth defects are more common among children born to older women.

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i. A female has millions of oocytes at the time of birth the new ova are not formed thereafter.
ii. Menopause occurs at approximately 40-50 years of age and hence fewer number of eggs are present with reduced fertility since the oocytes have aged.
iii. Their ability to divide diminishes and they may not be able to complete meiotice division properly.
iv. Fertilization of such oocytes may result in production of genetic abnormalities ( like Down's syndrome) in offsprings.
Hence, birth defects are more common among children born to older women.
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