Question

What percentage of sperms produced by a human male carry the Y chromosome?

Options

• 100%

• 75%

• 50%

• 25%

Answer 1

During spermatogenesis in males (XY), meiosis produces two types of sperms in equal proportions: 50% carry the X chromosome and 50% carry the Y chromosome. This equal distribution occurs because the male has both X and Y chromosomes that segregate during meiosis.