If a baby is a female, her mother's ovum must have been fertilized by a sperm carry the chromosome
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Correct Answer: Option A
Explanation:
The correct answer is A: X.
Explanation:
A baby is female if she inherits two X chromosomes, one from each parent. The mother's ovum (egg) always carries an X chromosome because females have two X chromosomes (XX). The father's sperm determines the sex of the baby. If the sperm carries an X chromosome, the resulting baby will be female (XX). If the sperm carries a Y chromosome, the baby will be male (XY). Therefore, for a female baby, the sperm must carry the X chromosome.
The correct answer is A: X.
Explanation:
A baby is female if she inherits two X chromosomes, one from each parent. The mother's ovum (egg) always carries an X chromosome because females have two X chromosomes (XX). The father's sperm determines the sex of the baby. If the sperm carries an X chromosome, the resulting baby will be female (XX). If the sperm carries a Y chromosome, the baby will be male (XY). Therefore, for a female baby, the sperm must carry the X chromosome.