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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?

1. Two X chromosomes
2. Only one Y chromosome
3. Only one X chromosome
4. One X and one Y chromosome

Correct answer: Two X chromosomes

Solution

A normal human female has two X chromosomes (46,XX). A Y chromosome is associated with male development, and having only one X is not the normal female chromosomal condition.

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