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Meiosis

Total questions: 70

Worksheet time: 18hrs 30mins

Name
Class
Date
1.

The teacher tells her class that some cells undergo meiosis and form haploid cells. Which group of cells are formed by meiotic division?

a)

sperm cells

b)

muscle fiber cells

c)

skin cells

d)

erythrocytes (red blood cells)

2.

The processes of meiosis and fertilization help ensure the survival of the species by providing each generation with the same number of

a)

gametes

b)

chromosomes

c)

body cells

d)

offspring

3.

Gametes must be haploid because —

a)

the gametes’ chromosomes will be replicated prior to cell division

b)

two gametes will unite during fertilization to create a diploid cell

c)

fertilization results with a haploid zygote

d)

gametes are small and can hold only the haploid number of chromosomes

4.

During which phase of meiosis does crossing over occur?

a)

Prophase II

b)

Telophase II

c)

Prophase I

d)

Metaphase I

5.

What occurs in meiosis but NOT in mitosis?

a)

chromosome replication

b)

the joining of homologous chromosomes

c)

production of daughter cells

d)

alignment of chromosomes along the metaphasal plate (middle)

6.

During meiosis, homologous chromosomes can exchange DNA in a process known as — See Figure M-10.

a)

crossing over

b)

replication

c)

cytokinesis

d)

internal fertilization

7.
A human usually has ______ chromosomes in their body cells.
a)
6
b)
22
c)
4
d)
46
8.
The purpose of sexual reproduction and meiosis is to form ________ cells.
a)
body
b)
sex
c)
somatic
d)
brain
9.
How many daughter cells are produced at the end of meiosis?
a)
1
b)
2
c)
3
d)
4
10.
How many chromosomes are in the new cells of meiosis?
a)
46
b)
23
11.
Before mitosis or meiosis can begin, DNA must go through Interphase. This is when...
a)
DNA replicates
b)
DNA splits
c)
DNA forms chromosomes
d)
Chromosomes cross over
12.
In meiosis, Prophase 1 is when chromosomes...
a)
cross over
b)
mutate
c)
hybridize
d)
fertilize
13.
What causes genetic variation in meiosis?
a)
chromosomes lining up
b)
crossing over of chromosomes
c)
separation of chromosomes
d)
chromosomes pulling apart
14.
What is one reason why we need meiosis?
a)
To double the number of chromosomes going into sex cells
b)
To halve the number of chromosomes going into sex cells
c)
To triple the number of chromosomes going into sex cells
d)
To not change the number of chromosomes going into sex cells
15.

If the diploid number of carrots is 18, the haploid number is

a)

18

b)

9

c)

27

d)

36

16.
The result of meiosis is:
a)
two diploid cells
b)
two haploid cells
c)
four diploid cells
d)
four haploid cells
17.

The chromosomes that pair up during meiosis, are called __________ chromosomes.

a)

heterozygous

b)

haploid

c)

homologous

d)

diploid

18.
What process, and which type of resulting cells are represented?
a)
mitosis, gametes
b)
mitosis, body cells
c)
meiosis, gametes
d)
meiosis, body cells
19.
Meiosis makes sperm and egg cells. In humans, sperm and egg cells each have _____ chromosomes. Therefore a fertilized human egg cell (sperm and egg cell combined) would create a cell with _____ chromosomes.
a)
23, 46
b)
46, 23
c)
2, 4
d)
50, 100
20.
How many daughter cells are produced from meiosis ?
a)
10
b)
6
c)
4
d)
2
21.

The products of meiosis are genetically...

a)

different.

b)

identical.

22.
Human eggs and sperm are _____, and each has ____ chromosomes.
a)
diploid, 23
b)
diploid, 46
c)
haploid, 23
d)
haploid, 46
23.

Identify a purpose of meiosis. Select all that apply.

a)

Produce gametes for reproduction.

b)

Repair damaged or dead cells.

c)

Reduce the chromosome number.

d)

Growth of organisms from birth to adulthood.

24.

What are homologous chromosomes?

a)

Pairs of chromosomes with different genes on each.

b)

Pairs of chromosomes with the same genes on each.

c)

Pairs of chromosomes with no genes.

d)

Pairs of chromosomes with the wrong genes on each.

25.

What phase of Meiosis is this?

a)

Telophase I

b)

Anaphase I

c)

Anaphase II

d)

Telophase II

26.

What phase is the picture showing?

a)

Metaphase I

b)

Metaphase II

c)

Prophase II

d)

Anaphase I

27.

How many chromosomes are in an egg or sperm cell at the end of Meiosis?

a)

23

b)

46

c)

64

d)

32

28.

Crossing over occurs in what phase of Meiosis?

a)

Prophase I

b)

Prophase II

c)

Metaphase I

d)

Interphase

29.

Homologous pairs line up in the middle of the cell in what phase of Meiosis?

a)

Metaphase I

b)

Metaphase II

c)

Mitosis

d)

Prophase II

30.

When chromosomes cross over they form what?

a)

A tetrad

b)

A spindle fiber

c)

A chromatid

31.

Genetic information is transferred to homologous pairs during what?

a)

Cytokinesis

b)

Crossing over

c)

Interphase

32.

What phase of Meiosis is the picture showing?

a)

Metaphase I

b)

Telophase I

c)

Anaphase II

d)

Telophase II

33.

What phase is in the picture?

a)

Telophase I

b)

Telophase II

c)

Prophase I

d)

Metaphase II

34.

What phase is shown in the picture?

a)

Prophase I

b)

Prophase II

c)

Telophase II

d)

Anaphase I

35.

What phase is in the picture?

a)

Anaphase I

b)

Anaphase II

c)

Telophase I

d)

Metaphase II

36.

What phase is in the picture?

a)

Metaphase 1

b)

Metaphase 2

c)

Prophase 1

d)

Prophase 2

37.

What phase is in the picture?

a)

Prophase 1

b)

Prophase 2

c)

Telophase 2

38.

What phase is in the picture?

a)

Anaphase 1

b)

Anaphase 2

c)

Telophase 2

39.

A tomato plant cell has 24 chromosomes. How many chromosomes will each daughter cell have after the cell undergoes a mitotic division?

a)

6 chromosomes each

b)

12 chromosomes each

c)

24 chromosomes each

d)

48 chromosomes each

40.

CROSSING OVER INCREASES

a)

LIFE SPAN

b)

GENETIC VARIATION

c)

THE NUMBER OF OFF-SPRING

d)

ALL ARE TRUE

41.

CROSSING OVER TAKES PLACE DURING

a)

PROPHASE II

b)

PROPHASE I

c)

INTERPHASE

d)

METAPHASE I

42.

__________-RE-ORDERS THE BASE SEQUENCE ;

EXAMPLE TO CREATE MORE GENETIC DIVERSITY

(ATA-CCG) TO (TTA-GGC)

a)

CROSSING OVER

b)

MITOSIS

c)

ASEXUAL REPRODUCTION

43.

DURING WHICH PHASE OF MEIOSIS DOES GENETIC VARIATION INCREASE

a)

PROPHASE II

b)

PROPHASE I

c)

ANAPHASE I

d)

ANAPHASE II

44.

MEIOSIS

a)

REDUCES THE NUMBER OF CHROMOSOMES BY ONE HALF

b)

PRODUCES UNIQUE SEX CELLS-1N

c)

ALLOWS TRAITS TO BE PASSED TO OFFSPRING

d)

ALL ARE TRUE

e)

INCREASE GENETIC VARIATION

45.

FERTILIZATION OCCURS WHEN

a)

THE SPERM UNITES WITH THE EGG

b)

THE SPERM UNDERGO MEIOSIS

c)

THE EGG UNDERGOES MEIOSIS

d)

THE EGG AND SPERM UNDERGOES MEIOSIS

46.

MEIOSIS PRODUCES 4 CELLS-THE CHROMOSOME NUMBER IS ...

a)

DIPLOID

b)

HAPLOID

47.

MEIOSIS PRODUCES 4 CELLS, THEY ARE

a)

N

b)

2N

c)

3N

48.

1N AND N MEAN THE SAME THING (LIKE MATH)

a)

TRUE

b)

FALSE

49.
What is it called when a sperm and egg meet?
a)
meiosis
b)
fertilization
c)
cell division
d)
mitosis
50.
A male shark has 40 chromosomes in each of its sex cells. How many would be present in its body cells?
a)
20
b)
40
c)
80
d)
160
51.
Which letter(s) in the diagram correspond to cells that are haploid? 
a)
A
b)
B
c)
C
d)
A and B
52.
Compared to the number of chromosomes contained in a body cell, how many chromosomes would normally be contained in a gamete?
a)
The same number
b)
One-fourth as many
c)
Twice as many
d)
Half as many
53.
What causes genetic variation in meiosis?
a)
chromosomes lining up
b)
crossing over of chromosomes
c)
separation of chromosomes
d)
chromosomes pulling apart
54.
Crossing over helps promote 
a)
male genotype
b)
genetic variation
c)
DNA replication
d)
mitosis
55.
Chromosomes exchange genetic material during 
a)
crossing over
b)
replication
c)
synthesis
d)
translation
56.
A human zygote should have _____ chromosomes inside.
a)
46
b)
23
c)
92
d)
64
57.
Females have ____ and males have _____ chromosomes.
a)
XX, XY
b)
XY, XX
c)
XX, XX
d)
XY, XY
58.
Diploid Cells are represented by
a)
2n
b)
n
c)
4n
d)
1/2 n
59.
Identify the phase:
a)
Metaphase I
b)
Metaphase II
c)
Anaphase I
d)
Anaphase II
60.
Identify the phase.
a)
Metaphase I
b)
Metaphase II
c)
Anaphase I
d)
Anaphase II
61.
Identify the process.
a)
Mitosis
b)
Meiosis I
c)
Meiosis II
d)
Interphase
62.
After meiosis II the daughter cells will contain ____ chromosomes if the original cell contained 78.
a)
78
b)
39
c)
23
d)
46
63.
Which of the following cells is a gamete?
a)
egg
b)
bone
c)
heart
d)
muscle
64.
The fertilized egg is termed a/an _____.
a)
gamete
b)
allele
c)
homolog
d)
zygote
65.

Is the following cell diploid or haploid?

a)

Diploid

b)

Haploid

66.
Identify the phase.
a)
Telophase I
b)
Telophase II
c)
Metaphase I
d)
Metaphase II
67.

1n indicates that the cell is ____.

a)

Diploid

b)

Haploid

68.

Is this karyotype for a male or female?

a)

MALE

b)

FEMALE

69.
What is the name of the structure labeled X?
a)
Centriole
b)
Centrosome
c)
Chromatid
d)
Chromosome 
70.
The structure labeled A is a(n)
a)
chromatid
b)
centriole
c)
centromere
d)
chromophere

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