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viktelen [127]
3 years ago
8

In the formation of baby boy or baby girl, mother does not have the main role. why?​

Biology
1 answer:
svp [43]3 years ago
6 0
A child's gender (male or female) is determined by the chromosome that the male parent contributes.

Females have XX sex chromosomes.

Males have XY sex chromosomes.

A male infant results if the male contributes his Y chromosome while a female infant results if he contributes his X chromosome.
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