Meiosis and Sexual Reproduction

Question 1

is sexual reproduction/meiosis present in prokaryotes?

Answer 1

NO

Question 2

are sex chromosomes homologous?

Answer 2

No, only XX is but XY is not

Question 3

S phase

Answer 3

chromosomes duplicated and held together at the centromere

Question 4

Prophase 1

Answer 4

chromosomes condense, homologous pairs pair up, and nuclear envelope splits, chiasmata form between non sister chromatids, CROSSING OVER –> recombination

Question 5

prometaphase 1

Answer 5

homo chromosomes attached to spindles at kinetochore, nuclear envelope fully disappears

Question 6

metaphase 1

Answer 6

spindle fibers attach to the paired homologous chromo, line up at metaphase plate

Question 7

anaphase 1

Answer 7

spindle fibers shorten and chromo pairs separate

Question 8

telophase 1

Answer 8

spindle breaks down and new nuclear membranes form, cytoplasm of the cell divides, 2 daughter cells

Question 9

gametogenesis

Answer 9

process of meiosis that creates gametes (sperm and egg)

Question 10

spermatogenesis

Answer 10

creates sperm

Question 11

oogenesis

Answer 11

creates an egg

Question 12

where does spermatogenesis occur?

Answer 12

in the seminiferous tubules with stem cells at the periphery of the tube and the spermatozoa at the lumen of the tube