The sex of the newborn baby is determined by the chromosome inherited from __________.

the mother

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the father

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mother's mother

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father's father

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Solution

The correct option is B the father
In case the ovum(female) is fertilized with a sperm(male) carrying X-chromosome the zygote develops into a female(XX) and the fertilization of ovum with a Y-chromosome carrying sperm results into a male offspring(XY). Thus, it is evident that it is the genetic makeup of the sperm(male/father) that determines the sex of the child.

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Question 8
A zygote which has an X-chromosome inherited from the father will develop into a

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