McqMate
| Q. |
What determines the sex of a child? |
| A. | Chromosomes of the father |
| B. | Chromosomes of the mother |
| C. | Rh factor of the parents |
| D. | Blood group of the father |
| Answer» A. Chromosomes of the father | |
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Explanation: In humans and several other species of animals, the father determines the sex of the child. In the XV sex-determination system, the female-provided ovum contributes an X chromosome and the maleprovided sperm contributes either an X chromosome or a Y chromosome, resulting in female (XX) or male (XY) offspring, respectively. |
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