Question

How do spermatogenesis and oogenesis differ in terms of the number of gametes they produce?

Answer 1

Spermatogenesis produces four haploid sperm cells, while oogenesis results in one mature ovum from the four haploid cells generated through meiosis, with the other three cells degenerating as polar bodies.

Step-by-step explanation:

Spermatogenesis and oogenesis are both processes of gametogenesis that occur through the series of cell divisions known as meiosis. However, they differ significantly in the number of gametes produced. During spermatogenesis, which occurs in the testes of males, meiosis results in the formation of four haploid sperm cells from a single germ cell. In contrast, oogenesis, which takes place in the ovaries of females, produces a single mature ovum from the four haploid cells that result from meiosis. This is because the cytoplasm is divided unequally during oogenesis, and three of the cells become polar bodies which eventually degenerate, leaving only one viable egg.

Answer 2

In spermatogenesis the sex cell divides (from 46 chromos to 23), and then divides again to produce 4 haploid cells that become sperm. In oogenesis, the sex cell divides into one ovum and a polar body in the first division, and in the second division the ovum divides again into a haploid (ovum) and a polar body, and the polar body divides into two more polar bodies. Polar bodies are non-functional, so only one ovum is produced in the end. Spermatogenesis produces millions of sperm, while oogenesis only produces one mature ovum a month.