Unit Two- 2.5 Gametogenesis

Question 1

spermatogenesis

Answer 1

-occurs in testes
-males produce 250 000 000
-spermatids mature into sperm

Question 2

oogenesis

Answer 2

-occurs in ovaries
-two divisions produces 3 polar bodies that die and 1 egg

Question 3

independent or random assortment (lining up)

Answer 3

-how the chromosomes line up at the equator during metaphase 1

Question 4

random fertilization

Answer 4

-egg fertilized with sperm

Question 5

crossing over

Answer 5

-occurs in prophase 1 near the end of the phase
-chromosomes tangle up and there is exchange of chromatid material between non-sister chromatids

Question 6

what are errors that can occur meiosis

Answer 6

deletion- piece of chromosome is deleted

duplication- a section of a chromosome appears 2 or more times

inversion- a section of a chromosome is inverted

translocation-a segment of one chromosome becomes attached to a different to a differnt chromosome