2.6 mitosis and meiosis

Question 1

define mitosis

Answer 1

division of the nucleus

Question 2

what happens during the G1 phase

Answer 2

-cell growth
-transcription, translation
-reproduction of organelle

Question 3

what happens during the G2

Answer 3

-cell getting ready for mitosis
-eg cyclins

Question 4

where are the checkpoints during the cell cycle

Answer 4

G1/S and G2/M

Question 5

equation for mitotic index

Answer 5

number of cells in PMAT / total cell number

Question 6

prophase

Answer 6

-chromosomes condensing
-sister chromatids
-nuclear envelope break down
-spindle forming

Question 7

metaphase

Answer 7

-spindle attaches to centromere
-chromosomes line up on equator

Question 8

anaphase

Answer 8

-sister chromatids separate
-pulled to opposite poles (motor proteins)

Question 9

telophase

Answer 9

-chromosomes at poles
-nuclear envelope reforming

Question 10

what is independent assortment

Answer 10

the random assortment of chromosomes either side of the equator during metaphase