Half of the sperm and half of the eggs carry the Y chromosome after meiosis. True or False?

The statement is false because, during meiosis in males, the process of gamete formation results in the production of four sperm cells, two of which carry the X chromosome and two that carry the Y chromosome. This means that, at the conclusion of meiosis, half of the sperm (50%) will carry a Y chromosome and the other half will carry an X chromosome.

In contrast, meiosis in females only results in the production of eggs that carry X chromosomes. Therefore, all eggs produced will carry the X chromosome, leading to a complete absence of Y chromosomes in female gametes. This fundamental difference is essential for understanding sex determination in sexually reproducing species, particularly mammals.

Thus, while it is true for male gametes that half carry the Y chromosome, the assertion about eggs is flawed since they only carry X chromosomes, making the entire statement false.