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Flashcards in Quiz 4 Deck (23)
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1

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

G1, G2, and S

2

What is the definition of mitosis?

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

3

Where does mitosis occur?

eukaryotic and somatic cells

4

What are the 5 phases of mitosis?

prophase
prometaphase
metaphase
anaphase
telophase

5

What happens during synthesis of the cell cycle?

chromosomes are copied

6

What happens in prophase?

chromosomes condense

7

What happens in prometaphase?

nuclear envelope breaks down

8

What happens in metaphase?

chromosomes line up int he middle of the cell

9

What happens in anaphase?

sister chromatids separate

10

What happens in telophase?

nuclear envelope reforms

11

What is the definition of meiosis?

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

12

What does asexual reproduction not provide?

genetic variation. cells are identical to parent

13

What does sexual reproduction provide?

genetic variation

14

What are autosomes?

contain genetic material to produce somatic cells

15

What are sex chromosomes?

contain genetic material to produce gametes

16

How many chromosomes does an individual have?

46 (23 from each parent)

17

What is the difference between mitosis and meiosis?

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

18

What is a diploid?

two copies of each type of autosome

19

What is n?

the haploid number, # of types of chromosomes

20

What is the big picture difference between mitosis and meiosis?

meiosis is reduced by half, mitosis is simply replicated

21

What happens in meiosis 1?

homologus chromosomes are replicated and seperated

22

What happens in meiosis 2?

sister chromatids within each chromosome seperate

23

What happens that is important in late prophase 1?

crossing over