Child A has two large X-shaped chromosomes (XX), and Child B has one large X-shaped chromosome and one much smaller Y-shaped chromosome (XY). Child A is and Child B is .

Child A is female and Child B is male

Explanation:

The XY sex-determination system is found in humans, most other mammals. In this system, the sex of an individual is determined by a pair of sex chromosomes. Females have two of the same kind of sex chromosome (XX). Males typically have two different kinds of sex chromosomes (XY).

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the correct answer is :

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