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7.1 Meiosis 2023

Total questions: 45

Worksheet time: 25mins

Name
Class
Date
1.

What percentage of chromosomes normally found in the body cells of an organism do gamete cells contain after meiosis?

a)

25%

b)

50%

c)

60%

d)

100%

2.

What process shown to the right increases the variations of chromosomes?

a)

cellular respiration

b)

gene splicing

c)

cytokinesis

d)

crossing over

3.

Which of these is a primary benefit of meiosis and sexual reproduction to a population?

a)

an increase in the chromosome number

b)

new forms of proteins

c)

new combinations of genes

d)

new alleles in the population

4.

Meiosis is significant within a population because it increases the –

a)

number of mature males

b)

genetic variations in the population

c)

amount of genetically modified organisms

d)

number of new alleles available

5.

Offspring that are the result of sexual reproduction are best described by which of the following?

a)

The offspring are genetically identical to the biological mother and father

b)

The offspring are genetically unique and contain a new combination of genes

c)

The offspring contain fewer chromosomes than either parent because of meiosis

d)

The offspring contain all of the dominant genes found in the grandparents

6.

The number of chromosomes found within the cells of any given species is a constant number maintained through multiple generations. The accumulation of chromosomes is prevented because the process of meiosis creates –

a)

haploid gamete cells

b)

mutations that destroy extra DNA

c)

genetically identical daughter cells

d)

offspring through asexual reproduction

7.

When fertilization occurs, the resulting zygote is a diploid cell containing two of every type of chromosome. This is because one of each type of chromosome is –

a)

mutated by ultraviolet radiation

b)

deleted during the fertilization process

c)

contributed by both parents

d)

duplicated within sperm cells

8.
Asexual reproduction and mitosis occur in...
a)
Body Cells
b)
Sex Cells or Gametes
9.
The purpose of sexual reproduction and meiosis is to form ________ cells.
a)
body
b)
sex
c)
somatic
d)
brain
10.
What is one of the advantages, of reproducing sexually versus asexually?
a)
survival of the fittest
b)
overproduction
c)
genetic variation
d)
cloning
11.
The fertilized egg is termed a/an _____.
a)
gamete
b)
allele
c)
homolog
d)
zygote
12.
In mitosis cells are genetically _______, but in meiosis cells are genetically ______.
a)
diverse, identical
b)
identical, diverse/different
13.
The result of meiosis is:
a)

two cells

b)

four cells

c)

diploid cells

d)

haploid cells

14.
Most of the cells in the human body are produced by
a)
mitosis
b)
meiosis
15.
The stages of mitosis in order
a)
Metaphase, Anaphase, Prophase, Telophase
b)
Prophase, Anaphase, Metaphase, Telophase
c)
Prophase, Metaphase, Anaphase, Telophase
d)
Anaphase, Prophase, Telophase, Metaphase
16.
After meiosis II the daughter cells will contain ____ chromosomes if the original cell contained 78.
a)
78
b)
39
c)
23
d)
46
17.
Which of the following cells is a gamete?
a)
egg
b)
bone
c)
heart
d)
muscle
18.
The fertilized egg is termed a/an _____.
a)
gamete
b)
allele
c)
homolog
d)
zygote
19.
In mitosis cells are genetically _______, but in meiosis cells are genetically ______.
a)
diverse, identical
b)
identical, diverse/different
20.
Meiosis is the _____.
a)
 nuclear division of gametes
b)
nuclear division of body cells
c)
division of body cells
d)
division of sex cells
21.
In sexual reproduction, chromosome reduction is necessary to ___.
a)
ensure that all offspring have the correct diploid number of chromosomes
b)
ensure that all offspring have the correct haploid number of chromosomes
c)
ensure that all daughter cells are identical
22.

Mitosis makes sure that all daughter cells are _____.

a)

genetically identical, diploid

b)

genetically identical, haploid

c)

genetically diverse, diploid

d)

genetically diverse, haploid

23.
The cells produced via meiosis are called:
a)
sex cells
b)
somatic cells
c)
body cells
d)
skin cells
24.
A human usually has xx amount of chromosomes.
a)
6
b)
22
c)
4
d)
46
25.
Crossing over helps promote 
a)
male genotype
b)
genetic variation
c)
DNA replication
d)
mitosis
26.
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
27.
What is another reason we need meiosis?
a)
So the offspring has genes from both parents
b)
So the offspring has genes from one parent
c)
So the offspring has genes from neither parents
d)
So the offspring makes its own genes
28.
Chromosomes exchange genetic material during 
a)
crossing over
b)
replication
c)
synthesis
d)
translation
29.
Human eggs and sperm are _____, and each has ____ chromosomes.
a)
diploid, 23
b)
diploid, 46
c)
haploid, 23
d)
haploid, 46
30.
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
31.
What causes genetic variation in meiosis?
a)
chromosomes lining up
b)
crossing over of chromosomes
c)
separation of chromosomes
d)
chromosomes pulling apart
32.
What is one of the advantages, why is it better to reproduce sexually versus asexually?
a)
survival of the fittest
b)
overproduction
c)
genetic variation
d)
cloning
33.

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

a)

18

b)

9

c)

27

d)

36

34.

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

a)

heterozygous

b)

haploid

c)

homologous

d)

diploid

35.

At the end of mitosis you have _____ cells.

a)

identical

b)

different

c)

identical twins

d)

variety

36.

The products of meiosis are genetically...

a)

different.

b)

identical.

37.
How many daughter cells are produced at the end of mitosis?
a)
1
b)
2
c)
3
d)
4
38.
Which best describes the process shown?
a)
nondisjunction
b)
mitosis
c)
independent assortment
d)
crossing over
39.
The haploid number of chromosomes for humans is ____.
a)
46
b)
43
c)
23
d)
26
40.
Which process produces the most variation within a species? 
a)
mitosis
b)
cloning
c)
meiosis
d)
asexual reproduction
41.
According to the chromosome theory of inheritance, what are carried from parents to their offspring on chromosomes?
a)
Genes
b)
Spindle Fibers
c)
Centrioles
d)
Cytoplasm
42.

The cells produced from MEIOSIS are identical (the same).

a)

True

b)

False

43.

The cells produced from MITOSIS are identical (the same).

a)

True

b)

False

44.

Meiosis is used for...

a)

Asexual Reproduction

b)

Sexual Reproduction

c)

Growth

d)

Repair

45.

Crossing over usually occurs between:

a)

Sister Chromatids

b)

Homologous Chromosomes

c)

Alleles

d)

Non-Homologous Chromosomes

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