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Flashcards in Cell Division Deck (49):
1

Somatic cell

Body cell

2

Soma

Body

3

Parts of interphase

G1
S
G2

4

Parts of mitotic phase

also known as mitosis

Prophase
Metaphase
Anaphase
Telophase

5

What does mitosis mean

Dividing

6

Cytokinesis

Division of cytoplasm

7

G1

Normal cell activity & growth

Most cells are in g1

8

S

Dna replicated

46 chromosomes to 92

Hook sisters together with centromere

9

What is the protein that hook sister chromatids together

Centromere

10

What are the cytoskeleton proteins

Spindlefiber
Astor
Centromere

11

G2

Continue growth and protein synthesis

Centromere becomes centrioles

12

When do centromere become centrioles

G2

13

reproductive cell division

Meiosis

14

Meiosis

Reduction division

15

Reduction

Reducing the number of chromosomes (chromatin)

46 to 23

16

Division

The dividing of the "mother" cell from 1 to 4

Results in formation of the sex cell

17

Prophase

Centrioles anchor w/ astor to poles

Scrambled egg/scattered

Get rid of nucleus

18

Metaphase

Line up in the middle

19

Anaphase

Pull apart and breaks centromere

20

Telophase

Trap them and reform nucleus

Opposite of prophase

See cleavage furrow

Cytokinesis happens

21

Cleavage furrow

Divide bend

Plant cells cant do b/c cell wall

22

Centromere

Hold sister chromatids together

23

What do the spindle fibers connect to

They connect to kinetochores that are on the centromere to make sure the sister chromatids break in middle

24

Kinetochores

Protein

On one end is the centromere
And on the other end is the centriole

25

Is the middle of metaphase protein

Everything in metaphase is protein except middle

26

When does the centromere split

In anaphase

27

When does evolution stop

Anaphase

28

Chromatids

Sisters and together

29

Chromosomes

Individuals

30

When is the only time they are called chromosome?

In anaphase

31

When does the making of a new cell begin in mitosis

In telophase when you see clevage

32

Mitosis

Cell replication

33

Meiosis

Reduction division and formation of sex cell

Number of chromosomes reducing

34

How does meiosis relate to mitosis

Meiosis is mitotic division (x2)

Goes through S and dives chromosomes but it makes 4 rather then 2
Goes through mitosis but still has 2 cells left over so it goes through meiosis

35

Tetrad

4 chromatids hooked together

36

Spermatogenesis

Male meiosis

37

Oogenesis

Female meiosis

38

What is another name for sex cell

Gamete

39

What are gonads

Cells being made

Male: testes
Female: ovaries

40

Homologous

Same origin, may or may not have same function

Ex: human arm vs cow arm (same bones, different function)
Human arm vs wing
Human arm vs whale tale

41

Heterologous

Different origin, same function

Ex: wing of bird vs wing of butterfly

42

How many tetrads are there

23 tetrad

43

Synapsis

Moving of tetrad to equator during which chiasma occurs

44

Chiasma

Crossing over

45

Crossing over

Chiasma

Stops evolution

46

Recombination

Result of chiasma

Leads to overall species evolution

47

Dyad

During meiosis, the result of PMAT1 is 46 dyad. These then go through PMAT2 and become haploid/sex cells

48

What are haploid cells

Sex cells

49

Somatic cell division

Interphase
Mitotic phase