Which one of following conditions of zygotic cell would lead to birth of a normal human female child

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4.Principles of Inheritance and Variation

normal

Which one of the following conditions of the zygotic cell would lead to the birth of a normal human female child ?

Two $X$ chromosomes

Only one $Y$ chromosome

Only one $X$ chromosome

One $X$ and one $Y$ chromosome

(AIPMT-2011)

Solution

(a): In humans, the female has a pair of $X$ chromosome (homogametic composition) and the male has $XY$ chromosomes (heterogametic composition). Therefore, two normal $X$ chromosomes in zygotic cell lead to the birth of a normal human female child.

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Which one of the following conditions of the zygotic cell would lead to the birth of a normal human female child ?

Solution

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