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

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

AIPMTAIPMT 2011Principles of Inheritance and Variation

Solution:

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