Spermatogenesis

Question 1

How does spermatogenesis start

Answer 1

with a spermatogonium (stem cell) [46] chromosomes

Question 2

What does the spermatogonium do

Answer 2

DNA replication, [92]. Then Mitosis will occur, 2 identical cells will be made. Leave one behind and the other one will become the primary spermatocyte [46]

Question 3

What does the primary spermatocyte [46] do

Answer 3

Dna Replication. [92] Then it goes through meiosis 1 to become 2 secondary spermatocytes. (this involves prophase 1 -crossing over and metaphase 1- independent assortment causing genetic variation)

Question 4

The two secondary spermatocytes [46 each] go through….

Answer 4

Meiosis 2. To become 4 spermatids with 23 chromosomes each.

Question 5

What do the spermatids go through

Answer 5

spermiogeneisis. Where they are remodelled to look like sperm with tails and head and acrosomal cap

Question 6

What is the last step

Answer 6

The spermiation stage were the spermatozoa lose attachment to the seroli cells and enter the lumen