Meiosis and Genetics

Question 1

What makes a homologous chromosome a proper pair?

Answer 1

They have equal markings

Question 2

What is the number of chromosomes in a gamete?

Answer 2

23

Question 3

During which phase does the pair of homologous chromosomes line up in the center of the cell

Answer 3

metaphase 1

Question 4

what is genetic variation

Answer 4

the difference in DNA among individuals

Question 5

What happens during crossover?

Answer 5

swap pieces of DNA

Question 6

How many chromosomes are in a human?

Answer 6

46

Question 7

What types of cells are produces during mitosis?

Answer 7

body cells

Question 8

What is the purpose of meiosis?

Answer 8

produce the gametes of sexual reproduction

Question 9

What is the number of cell division during meiosis?

Answer 9

2

Question 10

During which phase does the synapsis of homologous chromosomes occur?

Answer 10

Prophase 1

Question 11

what is the purpose of mitosis

Answer 11

to make diploid cells

Question 12

why is genetic variation important

Answer 12

is helped cause evolution

Question 13

where does mitosis take place

Answer 13

in the blood

Question 14

what is mitosis fueled by

Answer 14

skin, bone, and tissue

Question 15

why is meiosis important

Answer 15

It makes sure that when we produce sexuaally that we come out with the correct number of chromosomes

Question 16

what is the diploid number of chromosomes represented as

Answer 16

2n

Question 17

what is the haploid number of chromosomes represented as

Answer 17

n

Question 18

what is haploid

Answer 18

a cell with one set of chromosomes

Question 19

what is diploid

Answer 19

a cell with two sets of chromosomes

Question 20

where does meiosis take place

Answer 20

germ cells

Question 21

What is a likely result of crossing over during meiosis I?

Answer 21

Production of recombinant gametes

Question 22

Which of the following answer choices best explains a mechanism as to how Down syndrome might occur?

Answer 22

Sister chromatids fail to separate at chromosome 21 during anaphase II in a parent’s gamete.

Question 23

During meiosis, when does the ploidy (number of sets of chromosomes) get reduced from diploid (2n) to haploid (n)

Answer 23

Once telophase I of meiosis I is complete

Question 24

Which of the following occurs during meiosis II?

Answer 24

The separation of sister chromatids

Question 25

(The somatic cells of a cat contain 38 chromosomes.)

If a cat cell undergoes meiosis, how many chromosomes will be in the resulting cell?

Answer 25

19

Question 26

Is this statement true about mitosis? (It results in the formation of four haploid (n) gametes)

Answer 26

yes

Question 27

Is this statement true about mitosis? (Its goal is to separate homologous pairs of chromosomes.)

Answer 27

no

Question 28

Dr. Evil just discovered a way to prevent crossing over from occurring during meiosis in the gametes of her lab rats.
(what will best describes the effects her discovery would have on the lab rats?)

Answer 28

Prophase I would be disrupted and there would be reduced genetic variation in the rats’ offspring.

Question 29

what is the number of cell divisions during mitosis

Answer 29

2