Quiz 4

Question 1

What are the points within the cell cycle where there are checkpoints?

Answer 1

G1, G2, and S

Question 2

What is the definition of mitosis?

Answer 2

a form of nuclear division that forms two daughter nuclei genetically identical to the parent nucleus

Question 3

Where does mitosis occur?

Answer 3

eukaryotic and somatic cells

Question 4

What are the 5 phases of mitosis?

Answer 4

prophase
prometaphase
metaphase
anaphase
telophase

Question 5

What happens during synthesis of the cell cycle?

Answer 5

chromosomes are copied

Question 6

What happens in prophase?

Answer 6

chromosomes condense

Question 7

What happens in prometaphase?

Answer 7

nuclear envelope breaks down

Question 8

What happens in metaphase?

Answer 8

chromosomes line up int he middle of the cell

Question 9

What happens in anaphase?

Answer 9

sister chromatids separate

Question 10

What happens in telophase?

Answer 10

nuclear envelope reforms

Question 11

What is the definition of meiosis?

Answer 11

a form of nuclear division that results in 4 daughter nuclei that contains half of the genetic material from the parent nucleus

Question 12

What does asexual reproduction not provide?

Answer 12

genetic variation. cells are identical to parent

Question 13

What does sexual reproduction provide?

Answer 13

genetic variation

Question 14

What are autosomes?

Answer 14

contain genetic material to produce somatic cells

Question 15

What are sex chromosomes?

Answer 15

contain genetic material to produce gametes

Question 16

How many chromosomes does an individual have?

Answer 16

46 (23 from each parent)

Question 17

What is the difference between mitosis and meiosis?

Answer 17

in meiosis, homologus pairs are separated and then sister chromatids are separated

Question 18

What is a diploid?

Answer 18

two copies of each type of autosome

Question 19

What is n?

Answer 19

the haploid number, # of types of chromosomes

Question 20

What is the big picture difference between mitosis and meiosis?

Answer 20

meiosis is reduced by half, mitosis is simply replicated

Question 21

What happens in meiosis 1?

Answer 21

homologus chromosomes are replicated and seperated

Question 22

What happens in meiosis 2?

Answer 22

sister chromatids within each chromosome seperate

Question 23

What happens that is important in late prophase 1?

Answer 23

crossing over