Of the four chambers of the human heart, which has the thickest walls, and why?
Why can you not catch the same cold twice, but a new cold will make you sick for a week or two?
- What is the key step in spermatogenesis that allows for unlimited sperm production? This step is not present in oogenesis, and therefore only a finite number of eggs could be produced.
- What is the key step in spermatogenesis that allows for unlimited sperm production? This step is not present in oogenesis, and therefore only a finite number of eggs could be produced.