Question

This is a anatomy question on the reproduction system

1. Compare the end results of gametogenesis in a male and a female.

Answer 1

Answer

In males,

The end of step of gametogenesis (spermatogenesis) results in formation 4 haploid sperm cells.

• All four sperms are fully functional and capable of fertilizing the oocyte.
• They are haploid with 23 chromosomes.

In females,

The end of step of gametogenesis (oogenesis) results in formation 1 haploid seconday oocyte and 3 polar bodies.

• Meiosis I of primary oocyte produces one seondary oocyte and one polar body.
• Meiosis II of secondary oocyte produces one mature ovum and one polar body.
• The polar body that resulted from meiosis I also undergoes meiosis II to produce two polar bodies.
• Hence, the end result is one fully functional ovum and 3 polar bodies.
• The 3 polar bodies are non functional and cannot be fertilized by a sperm.