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Write notes on:
Sex determination in the unborn baby.
Write notes on:
Sex determination in the unborn baby.

Harshit Singh , 4 Years ago
Grade 12th pass
anser 1 Answers
Harshit Singh
Dear Student

Sex determination in unborn baby: The sex of unborn baby is determined by the sex chromosomes. An unfertilized egg always has X chromosomes. Sperms are of two types. One contains X chromosomes and the other contains Y chromosomes. If sperm contributes a Y chromosome to the egg at fertilisation, the zygote would develope into male child. If a sperm containing X chromosome fertilises the egg, the zygote would develop into a female.

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Last Activity: 4 Years ago
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