BIOL 1441 L9

Question 1

Gamete

Answer 1

in sexual reproduction, parents pass half of genetic information. What is this cell called (genetic information is shared)

Question 2

Meiosis I

Answer 2

separate the duplicated homologous chromosomes

Question 3

Meiosis I

Answer 3

first round of cellular division, primary source of the genetic diversity in gametes

Question 4

tetrads

Answer 4

pair of homologous chromosomes (with 4 sister chromatids)

Question 5

Prophase I

Answer 5

Tetrads are built in

Question 6

Prophase I

Answer 6

Crossing over occurs in

Question 7

crossing over

Answer 7

Homologous chromosomes connect to oneanother & swap genetic information, generates recombinant chromosomes

Question 8

recombinant chromosomes

Answer 8

carry “mixed” genetic information

Question 9

Prometaphase I

Answer 9

the nuclear envelope around the tetrads breaks down, Spindle fibers begin to attach to & pull on the tetrads

Question 10

Metaphase I

Answer 10

the tetrads have been pulled to the metaphase plate in the middle of the cell

Question 11

Metaphase I

Answer 11

maternal & paternal chromosomes in each tetrad lineup randomly

Question 12

Anaphase I

Answer 12

the proteins holding the tetrads together break

Question 13

Anaphase I

Answer 13

homologous chromosomes in each tetrad are pulled toopposite ends of the dividing cel

Question 14

telophase I (and cytokinesis)

Answer 14

the homologous chromosomes reach the opposite ends of the dividing cell

Question 15

one

Answer 15

Each new cell has ___copy of the chromosomes, making them haploid cells

Question 16

Meiosis II

Answer 16

begins shortly after Meiosis I

Question 17

Meiosis II

Answer 17

haploid cells from Meiosis I enter

Question 18

4

Answer 18

By the end of meiosis II ___ new haploid cells (gametes) have been formed

Question 19

Prophase II & Prometaphase II

Answer 19

a new set of spindle fibers develops to divide the genetic information

Question 20

Prometaphase I

Answer 20

the fibers attached to tetrads (groups of 2 connected chromosomes

Question 21

Metaphase II

Answer 21

all the chromosomes in both cells are randomly aligned along the metaphase plate

Question 22

Anaphase II

Answer 22

the sister chromatids (of each chromosome) are separated from one another (pulled toward opposite ends)

Question 23

telophase II

Answer 23

New nuclear envelopes form around each set of chromosomes during

Question 24

cytokinesis

Answer 24

Once __________ finishes splitting the cytosol& organelles, four haploid gametes are created!

Question 25

Diploid (2n)

Answer 25

Ploidy of daughter cells (diploid or haploid?) In Mitosis

Question 26

Haploid (n)

Answer 26

Ploidy of daughter cells (diploid or haploid?) In Meiosis

Question 27

identical

Answer 27

Genetic makeup of daughter cells. In Mitosis

Question 28

different

Answer 28

Genetic makeup of daughter cells. In Meiosis

Question 29

meiosis

Answer 29

Does crossing over between non-sister chromatids occur? In mitosis or meiosis.

Question 30

meiosis

Answer 30

Do homologous chromosomes pair to form tetrads? In mitosis or meiosis

Question 31

1

Answer 31

Number of DNA replications in both mitosis and meiosis

Question 32

yes

Answer 32

is sexual reproduction more challenging than asexual reproduction?

Question 33

genetic diversity

Answer 33

Sexual reproduction is still worthwhile toorganisms because it increases

Question 34

meiosis, fertilization

Answer 34

genetic diversity comes through what?

Question 35

Independent assortment

Answer 35

the random division of genetic information into gametes

Question 36

metaphase I

Answer 36

tetrads line up randomly

Question 37

Prophase I

Answer 37

Crossing over occurs during _________ of meiosis

Question 38

Independent assortment

Answer 38

occurs during Metaphase I & Metaphase II of meiosis

Question 39

Fertilization

Answer 39

the fusion of two haploid gametes, generating one new diploid cell

Question 40

genes

Answer 40

Each gamete has a different combination of

Question 41

one individual

Answer 41

In asexual reproduction, offspring receive all of their genetic information from

Question 42

yes

Answer 42

Is asexual reproduction is used by bacteria and some fungi, plants, and animals?

Answer 43

4 haploid cells are called

Question 44

sexual reproduction

Answer 44

Meiosis is usedto generategametes for

Question 45

parent cell

Answer 45

Mitosis is used to make identical copies of the

Question 46

Mitosis

Answer 46

What starts with one diploid and ends with two diploid cells

Question 47

meiosis

Answer 47

what starts with one diploid and ends with 4 haploid cells