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21. Explain how the *** of …

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21. Explain how the *** of child is determined at the of conception in human being? How variations are caused during sexual reproduction.

Posted by Anshul Rathee 6 years, 9 months ago

CBSE > Class 10 > Science

1 answers

Ansh Arora 6 years, 9 months ago

By the pair of *** chromosomes coming from the father if thier is xy then a boy if both xx then a girl child would born . U.may refer ur ncert

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