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Meiosis

Total questions: 20

Worksheet time: 10mins

Name
Class
Date
1.

The diploid and haploid number of chromosomes in a gamete is represented by the symbol

a)

z

b)

n

c)

x

d)

y

2.

If an organism’s diploid number is 12, what is the organism's haploid number?

a)

3

b)

6

c)

12

d)

24

3.

During the process shown below, homologous chromosomes exchange genetic material. What is this process called?

a)

Crossing Over

b)

Independent Assortment

c)

Fertilization

d)

Meiosis

4.

If an organism has a haploid number of 20, what is the organism's diploid number?

a)

10

b)

20

c)

40

d)

80

5.

Homologous chromosomes pair up during which phase of meiosis?

a)

Prophase I

b)

Prophase II

c)

Metaphase I

d)

Metaphase II

6.

Crossing Over occurs during which phase of Meiosis?

a)

Prophase I

b)

Prophase II

c)

Metaphase I

d)

Metaphase II

7.

Independent Assortment occurs during which phase of Meiosis?

a)

Prophase I

b)

Prophase II

c)

Metaphase I

d)

Metaphase II

8.

Which of the following statements is true about how the number of chromosomes is reduced between meiosis I and meiosis II?

a)

Crossing-over occurs

b)

Metaphase occurs

c)

DNA replication occurs twice

d)

DNA replication does not occur again

9.

______ is a source of genetic variation that involves the swapping of sections of chromosomes during meiosis.

a)

Crossing Over

b)

Independent Assortment

c)

Fertilization

d)

Meiosis

10.

Gametes are produced by the process of

a)

Mitosis

b)

Meiosis

c)

Crossing Over

d)

Replication

11.

Humans possess two alleles, or variations, for each gene. The alleles may be the same, or they may be different.When humans reproduce, their alleles are separated and independently sorted into different gametes, or sex cells. So, when sex cells randomly combine during fertilization to produce offspring, there is

a)

a high probability of producing a clone.

b)

a low probability of survival.

c)

an increase in genetic variation.

d)

a decreased risk of mutation.

12.

Unlike mitosis, meiosis results in the formation of

a)

Diploid cells.

b)

Haploid cells.

c)

2n daughter cells.

d)

Body cells.

13.

Unlike mitosis, meiosis results in the formation of

a)

Two genetically identical cells.

b)

Four genetically different cells.

c)

Four genetically identical cells

d)

Two genetically different cells

14.

If an organism has a diploid number of 30, what would be the haploid number?

a)

5

b)

10

c)

15

d)

30

15.

If an organism has a haploid number of 23, what would be the diploid number?

a)

3

b)

23

c)

46

d)

92

16.

______________ is a source of genetic variation that results from the random alignment of homologous chromosomes during meiosis.

a)

Crossing Over

b)

Independent Assortment

c)

Meiosis

d)

Fertilization

17.

In meiosis I, ________ _________ separates.

a)

Homologous chromosomes

b)

Sister chromatids

c)

Crossing over

d)

Independent Assortment

18.

In meiosis II, ________ _________ separates.

a)

Homologous chromosomes

b)

Sister chromatids

c)

Crossing over

d)

Independent Assortment

19.

Which of the following accurately states the end result of meiosis?

a)

four diploid cells

b)

two diploid cells

c)

four haploid cells

d)

two haploid cells

20.

Which phase of interphase does NOT occur after meiosis I?

a)

G1

b)

G2

c)

S

d)

All of these stages occur