Question

How is sex determined in humans?

Answer 1

Sex determination in humans

1. In humans, the type of male haploid gamete that unites with the female egg determines sex.
2. A male gamete's 23^rd pair can have either an X or a Y chromosome.
3. An X chromosome is always present in a female egg.
4. Females have 46 chromosomes, which are organized into 23 homologous pairs.
5. Males have 22 homologous pairings, while females have one heterologous pair (the XY pair).
6. Fertilization of an egg (22 + X) with sperm with 22+X chromosomes produces a female offspring (44A + XX).
7. Fertilization of an egg (22 + X) with sperm carrying 22+Y chromosomes produces a male offspring (44A + XY).