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How do baby for under female snd male

Posted by Varinder Singh 7 years ago

CBSE > Class 08 > Science

1 answers

Meghna Thapar 5 years, 6 months ago

The gender of a developing baby is determined at conception, when the embryo has either two XX chromosomes, or an X and a Y chromosome. Around the 6 th week of the unborn baby's development, a gene on the Y chromosome of a developing boy tells the fetal tissue that will form the *** organs to become the testes. Men determine the *** of a baby depending on whether their sperm is carrying an X or Y chromosome. An X chromosome combines with the mother's X chromosome to make a baby girl (XX) and a Y chromosome will combine with the mother's to make a boy (XY).

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