In humans, there are 22 pairs of non-sex chromosomes and one pair of sex chromosomes, with females having XX and males having XY. The probability of having a son or daughter is always 50%, as it depends on whether the sperm contributes an X or Y chromosome.

Question

Accepted Answer

a) Correct. The statement is true because the father contributes either an X or a Y chromosome through the sperm, while the mother always contributes an X chromosome through the egg. This results in a 50% chance of having a son (XY) or a daughter (XX).

In humans, there are 22 pairs of non-sex chromosomes and one pair of sex chromosomes, with females having XX and males having XY. The probability of having a son or daughter is always 50%, as it depends on whether the sperm contributes an X or Y chromosome.

Solution

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