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Meiosis

Total questions: 45

Worksheet time: 23mins

Name
Class
Date
1.

What represents a male organism?

a)

2 X homologous chromosomes

b)

1 X & 1 Y chromosome (The Y chromosome is smaller than the X chromosome)

2.

How many copies of a gene does an individual have?

a)

1

b)

2

c)

3

d)

4

3.

True or False: In crossing over, similar chromatids swap genes.

a)

True

b)

False

4.

True or False: Diploid cells have 2 sets of chromosomes.

a)

True

b)

False

5.

What are homologous chromosomes?

a)

one side of a duplicated chromosome

b)

a point where two chromatids are held together

c)

two chromosomes that are similar in size, shape, and genetic content

d)

an organism’s reproductive cells

6.

What is the process by which sex cells (gametes) are produced?

a)

interphase

b)

meiosis

c)

mitosis

d)

sex

7.

True or False: All gametes made by 1 person contain the same information.

a)

True

b)

False

8.

What is the 23rd pair of chromosomes in humans?

a)

trisomy 21

b)

karyotype

c)

gametes

d)

sex chromosomes

9.

True or False: Meiosis produces haploid cells.

a)

True

b)

False

10.

What is one half of the typical "X" structure of a chromosome?

a)

centrosome

b)

homologous chromosome

c)

chromatid

d)

lefty

11.

Which of the following is a gamete?

a)

hair cells

b)

egg

c)

lungs

d)

epithelial tissue

12.

True or False: Human somatic cells contain 46 chromosomes.

a)

True

b)

False

13.

What does a karyotype show you?

a)

the chromosomes of an organism in homologous pairs

b)

all of the genes present in an organism

c)

the chromosomes of an organism paired randomly

d)

the genes of an organism in homologous pairs

14.

Why are human chromosomes in pairs?

a)

We get 23 chromosomes from our mother and 23 from our father.

b)

You get 23 pairs of chromosomes in total from your mother and father.

c)

They are not in pairs.

15.

The cells created at the end of meiosis are _______.

a)

haploid

b)

diploid

c)

triploid

d)

trisomy

16.

What is the advantage of crossing over?

a)

decreases genetic diversity

b)

replicates genetic information

c)

increases genetic diversity

d)

changes genetic information

17.

The skin cell of a dog contains 78 chromosomes. How many chromosomes will be in its gamete?

a)

78

b)

39

c)

156

d)

20

18.

A cat's sperm cell has 19 chromosomes. How many chromosomes are in its muscle cell?

a)

9

b)

38

c)

76

d)

10

19.

Mitosis or Meiosis: This process creates 2 diploid cells.

a)

Mitosis

b)

Meiosis

20.
Crossing over occurs in which phase ?
a)
metaphase I
b)
anaphaseII
c)
telophaseII
d)
prohase I
21.
What phase is shown here?
a)
Telophase I
b)
Metaphase II
c)
Telophase II
d)
Anaphase I
22.
Sex cells have _______ of the genetic information that body cells have. (Pg. 174)
a)
half
b)
twice
c)
triple
d)
a quarter
23.
Most chromosomes are found in pairs that have the same structure and size. These homologous chromosomes carry __________ genes. (pg. 174)
a)
the same
b)
different
c)
triple
d)
double
24.
One chromosome pair is made up of sex chromosomes. Sex chromosomes control the development of sexual characteristics. In humans, these chromosomes are called _________________________. (Pg. 174)
a)
X & Y chromosomes
b)
X & Z chromosomes
c)
Y & Z chromosomes
d)
W & X chromosomes
25.
Sex cells are also known as _______ (Pg. 175)
a)
gametes
b)
DNA
c)
RNA
d)
chloroplast
26.
Cells that contain half the usual number of chromosomes are known as..... (Pg. 175)
a)
haploid
b)
diploid
c)
chromosome
d)
DNA
27.
An _____ is a gamete that forms in female reproductive organs. (Pg. 175)
a)
egg
b)
sperm cell
c)
chromosome
d)
DNA
28.
The gamete that forms in male reproductive organs is called a _______. (Pg. 175)
a)
sperm cell
b)
egg
c)
chromosome
d)
DNA
29.

A human egg and a human sperm cell each have _____ chromosomes. (Pg. 175)

a)

23

b)

46

c)

36

d)

28

30.
The type of cell division that produces haploid sex cells such as eggs and sperm cells. (Pg. 175)
a)
Meiosis
b)
Mitosis
c)
Osmosis
d)
DNA
31.
Only cells that will become sex cells go through ________. (Pg. 178)
a)
Meiosis
b)
Mitosis
c)
chromosome
d)
DNA
32.

During mitosis, the nucleous divides...

a)

once

b)

twice

c)

three times

d)

four times

33.

During meiosis, the nucleous divides

a)

twice

b)

once

c)

three times

d)

four times

34.

THE GAMETES ARE CONSIDERED TO HAVE ONE HALF OF THE GENETIC INFO SO IT IS CALLED

a)

DIPLOID (2N)

b)

DIPLOID (N)

c)

HAPLOID (2N)

d)

HAPLOID (N)

35.

CROSSING OVER ALLOWS FOR WHAT TO HAPPEN?

a)

ALL CELLS TO STAY THE SAME

b)

GENETIC VARIATION

c)

REDUCTION OF CHROMOSOMES

d)

CHROMOSOME NUMBER TO INCREASE

36.

WHEN THE SPERM FERTILIZES THE EGG WHAT IS FORMED

a)

ZYGOTE

b)

EMBRYO

c)

FETUS

d)

FERTILIZATION

37.

THIS IMAGE SHOWS WHAT IS HAPPENING WITH THE CHROMOSOMES?

a)

NON- DISJUNCTION

b)

METAPHASE

c)

TELOPHASE

d)

CROSSING OVER

38.

Explain the karyotype of this individual

a)

Male - no genetic defect

b)

Male - Down's Syndrome

c)

Female - no genetic defect

d)

Female - Down's Syndrome

39.
Identify the phase:
a)
Metaphase I
b)
Metaphase II
c)
Anaphase I
d)
Anaphase II
40.
Identify the phase.
a)
Metaphase I
b)
Metaphase II
c)
Anaphase I
d)
Anaphase II
41.
In mitosis cells are genetically _______, but in meiosis cells are genetically ______.
a)
diverse, identical
b)
identical, diverse/different
42.
Identify the phase.
a)
Telophase I
b)
Telophase II
c)
Metaphase I
d)
Metaphase II
43.
The diagram shows the process of cell specialization from a single stem cell. Which of the following statements is true about the process of specialization.
a)
Specilized cells (blood, skin, nervous etc) cannot be produced from a single stem cell
b)
Specilized cells are produced immediately following fertilization
c)
Even though all the cells in an organism come from one single cell, they can specialize into different cell types
d)
Sincce all the cells in an organism come from one single cell, they must all have the same structure and function
44.
What is one goal of cellular differentiation/specialization?
a)
To create specialized cells to help organism maintain homeostasis.
b)
To many cells.
c)
To make stem cells
d)
to make single celled organisms
45.

What is Cell differentiation

a)

A process in which an unspecialised cell develops into a specialized type of cell.

b)

A process in which an specialised cell develops into a unspecialised type of cell.

c)

A process in which an egg cell in fertilised

d)

A process where a fertilized egg cell sinks into the wall of the uterus.

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