Meiosis - Details!

Question 1

In meiosis DNA replication happens in…

Answer 1

Interphase

Question 2

Where do preparations happen in meiosis?

Answer 2

Interphase

Question 3

In meiosis there are __ cell divisions.

Answer 3

2

Question 4

Meiosis one creates:

Answer 4

2 Daughter Cells

Question 5

In Meiosis II, 2 daughter cells make…

Answer 5

4 Daughter cells

Question 6

Both Meiosis I & II have

Answer 6

Prophase
Metaphase
Anaphase
Telophase

Question 7

Both Meiosis I & II are preceded by an..

Answer 7

Interphase & S Phase

Question 8

Meiosis occurs only in…

Answer 8

Diploid, Tetraploid & Hexaploid Cells

Question 9

In this phase of meiosis, chromatin becomes chromosomes. Homologous chromosomes pair up & synapse together.

Answer 9

Prophase I

Question 10

In Prophase I, the homologous pairs form a

Answer 10

Tetrad - 4 Chromatids (2xSisters x2)

Question 11

T/F Crossing over occurs only during Prophase 1.

Answer 11

TRUE!!!

Question 12

When does the meiotic spindle form?

Answer 12

Prophase I

Question 13

Tetrads will line up @ the equator here

Answer 13

Metaphase I

Question 14

The spindles in metaphase 1 are different because they..

Answer 14

Attach only ONE per chromosome

Question 15

The Double V appearance is typical in…

Answer 15

Anaphase I

Question 16

In Anaphase I, the spindle apparatus ________ and centromeres __ ___ _______.

Answer 16

Shortens

Do not divide

Question 17

In Telophase I, homologues are at opposite poles and each pole has…

Answer 17

1 Double Stranded Set of Chromosomes

Question 18

In Telophase I, the homologues are __________ into __ _____ _______.

Answer 18

Seperated, 2 Haploid Cells

Will divide again into 4 daughter cells

Question 19

Cytokinesis has to happen following Telophase I. T/F?

Answer 19

TRUE

Question 20

Chromosomes will repack to chromatin in cytokinesis. T/F?

Answer 20

False - May reform, but not always

Question 21

Therefore the nucleus & nuclear envelope…

Answer 21

MAY reform

Question 22

This looks more like Mitosis than Meiosis!

Answer 22

Meiosis II

Question 23

T/F Meiosis II has a 2nd S phase.

Answer 23

FALSE

Question 24

T/F Meiosis II has a 2nd interphase.

Answer 24

FALSE - Already replicated

Question 25

There WILL BE Centrosome replication & spindle apparatus reform in...

Answer 25

Anaphase II

Question 26

Spindles attach __ per chromosome, from each side @ __________ in _______ __.

Answer 26

2, Centromere, Metaphase II

Question 27

Characteristic V shape appears in..

Answer 27

Anaphase II

Question 28

The other big part of Anaphase II?

Answer 28

Sister chromatids seperate!

Question 29

In Telophase II, the nuclear envelope will form around...

Answer 29

Pronucleus

Question 30

Cytokinesis occurs in Telophase II producing:

Answer 30

4 Daughter Cells

Question 31

T/F Sperm and Eggs are functional gametes after cytokinesis.

Answer 31

FALSE - Sperm need to lose weight, lose non-essential organelles and grow flagellum.

Question 32

Mitosis occurs in _______ cells while meiosis occurs in ___________.

Answer 32

Somatic | Sex Cells

Question 33

Ploidy of Mitosis & Meiosis

Answer 33

Mitosis - 2N | Meiosis - 1N

Question 34

T/F Sex cells can also divide by mitosis, but only cells that can divide by meiosis.

Answer 34

TRUE

Question 35

In Mitosis 1 cell makes: | In Meiosis 1 cell makes:

Answer 35

Mitosis: One-->2 Identical Daughters Meiosis: One-->2-->4 different cells

Question 36

DNA replication happens in:

Answer 36

S phase/Interphase of Mitosis & Meiosis I | Not in Meiosis II

Question 37

Chromatin condensis in

Answer 37

Mit: Prophase Meiosis I: Prophase I Meiosis II: Prophase II

Question 38

Nuclear envelope breaks down in

Answer 38

Mit: Prometaphase Meiosis I: Prophase I Meiosis II: Prophase II

Question 39

Centrosomes divide in:

Answer 39

Interphase (all 3)

Question 40

Spindle apparatus forms:

Answer 40

Prophase Prophase I Prophase II

Question 41

Tetrads form

Answer 41

Prophase I

Question 42

Crossing over occurs

Answer 42

Prophase I

Question 43

Chromosomes align at the equator:

Answer 43

Metaphase N/A Metaphase II

Question 44

Homologues align at the equator:

Answer 44

Metaphase I

Question 45

Microtubules attach to the centromere:

Answer 45

``` Metaphase (2 per) Metaphase I (1 per) Metphase II (2 per) ```

Question 46

Centrosomes seperate:

Answer 46

Anaphase N/A Anaphase II

Question 47

Homologues Seperate

Answer 47

Anaphase I

Question 48

Cytokineseis

Answer 48

Telophase Telophase I Telophase II

Question 49

Ploidy Reduced

Answer 49

Meiosis I - After Telophase I