Spermatogenesis

Question 1

What happens during mitosis (Spermatogenesis)?

Answer 1

• Somatic cell division of SPERMATOGONIA
• 2 diploid daughter cells produced, one remains in place the other moves into the lumen if the SEMINEFEROUS TUBULES
• This displaced cell differentiates into a PRIMARY SPERMATOCYTE.

Question 2

Describe MEIOSIS of SPERMATOGENESIS?

Answer 2

2 cycles of cell division produce 4 immature gametes that are not identical in size.

Within the semineferous tubules, PRIMARY SPERMATOCYTES meiotic divisions produce spermatids

Question 3

What 3 integrated processes does Spermatogenesis involve?

Answer 3

1) Mitosis
2) Meiosis
3) Spermiogenesis

Question 4

What are SPERMATIDS?

Answer 4

SPERMATIDS are undifferentiated male gametes

Question 5

What happens during SYNAPSIS of MEIOSIS I?

Answer 5

• Paternal and maternal chromosomes come come together

- involves 23 pairs of chromosomes; each member consists of 2 chromatids