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

Explanation

In human genetics, the presence of two X chromosomes (XX) in a zygote results in the development of a female child. This is because females are homogametic, meaning they have two of the same kind of sex chromosome, XX. Males, on the other hand, are heterogametic with one X and one Y chromosome (XY).Option A is correct because two X chromosomes indicate a normal female.Option B is incorrect because a single Y chromosome without an X does not support normal human development.Option C is incorrect because a single X chromosome, while resulting in a female, often leads to Turner syndrome, which is not a typical female development.Option D is incorrect because one X and one Y chromosome indicates a normal male child.