If the sex chromosomes of a fertilized egg is (XX), the baby is a ___ child.

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Solution

Sex chromosomes
Sex of an unborn baby depends upon the pair of sex chromosomes that are present in it.
The two sex chromosomes are X and Y. The unfertilized egg always has one X chromosome.
But sperms have both X and Y chromosomes.
If the egg is fertilized by a sperm containing X chromosome, the baby is a girl.
If the egg is fertilized by a sperm containing Y chromosome, the baby is a boy.
Final Answer: If the sex chromosomes of a fertilized egg is (XX), the baby is a girl child.

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