The average ratio of men and women in the hum | vedclass

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(B) In human populations,the sex ratio at birth is approximately $1:1$. This is due to the mechanism of sex determination,where the male produces two

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$1:1$

Vedclass · Answer

(B) In human populations,the sex ratio at birth is approximately $1:1$. This is due to the mechanism of sex determination,where the male produces two types of gametes ($X$ and $Y$ chromosomes) in equal proportions. During fertilization,there is an equal probability of a sperm carrying either an $X$ or a $Y$ chromosome fusing with the egg ($X$ chromosome). Therefore,statistically,the ratio of male to female offspring is $1:1$.

The average ratio of men and women in the human population is:

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