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CBSE Class 8 Answered

explain what determines the sex of a body
Asked by amolgavit76.8dgatl | 13 Feb, 2022, 09:15: AM
answered-by-expert Expert Answer

The sex of the baby is determined by the type of sex chromosome present in the fertilised egg from
which the baby develops.
 
More information is as follows: - 

The females carry two X-chromosomes. Females produce one type of gametes (eggs) with same type of chromosomes (22 + X). Males have one X and one Y chromosome. Among the male gametes, half of the sperms carry X-chromosome (22 + X) and half carry Y-chromosome (22 + Y). Thus female is homogametic and male is heterogametic.

When a sperm carrying X chromosome fertilizes an egg, the zygote develops into female (XX condition). When sperm carrying Y chromosome fertilizes an egg, the zygote develops into a male (XY condition). Thus, sex is determined at the time of fertilization.

 
Answered by Shiwani Sawant | 14 Feb, 2022, 10:14: AM

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