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Meiosis, Chromosomal Mutations & Karyotypes

Total questions: 35

Worksheet time: 1hrs 10mins

Name
Class
Date
1.
Based on the Karyotype shown, at which chromosome pair can we identify a genetic disorder? 
a)
Chromosome pair 5
b)
sex chromosomes
c)
Chromosome pair 21
d)
There are no chromosomal disorders
2.
Which sex chromosomes would indicate a typical human male?
a)
XX
b)
X
c)
XY
d)
XXY
3.
Photograph of chromosomes grouped in ordered pairs
a)
pedigree
b)
Punnett Square
c)
Venn Diagram
d)
Karyotype
4.
a)
This karyotype shows Trisomy 21
b)
This karyotype has no abnormality
c)
This karyotype is missing a sex chromosome
d)
This karyotype is from a gamete
5.
Which would be considered a somatic cell?
a)
Sperm cell
b)
Egg Cell
c)
Skin Cell
d)
All of these
6.
Which of the following would be considered a Gamete cell?
a)
Egg Cell
b)
Sperm Cell
c)
Both of these
d)
None of these
7.
What is the chromosomal condition of the individual whose karyotype is seen in the image?
a)
Monosomy X (Turner's Syndrome)
b)
Trisomy 21 (Down's Syndrome)
c)
Trisomy 13 (Patau Syndrome)
d)
Trisomy 18 (Edwards's Syndrome)
8.

A pair of identical chromosomes shown in a karyotype, one inherited from the female, and one inherited from the male are called

a)

sister chromotids

b)

centromeres

c)

homologous chromosomes

d)

autosomes

9.
What is the haploid number for this Karyotype?
a)
26
b)
27
c)
52
d)
54
10.

Chromosome mutation involving loss of a piece of chromosome.

a)

Deletion

b)

Inversion

c)

Translocation

d)

Removal

11.

Chromosome mutation involving the repeat of a piece of chromosome.

a)

Deletion

b)

Inversion

c)

Translocation

d)

Duplication

12.

Chromosome mutation involving a segment of a chromosome breaking off and attaching to a non-homologous chromosome.

a)

Deletion

b)

Inversion

c)

Translocation

d)

Duplication

13.
a)

Deletion

b)

Inversion

c)

Translocation

d)

Duplication

14.
a)

Deletion

b)

Inversion

c)

Translocation

d)

Duplication

15.
Identify the mutation in the picture.
a)
Inversion
b)
Deletion
c)
Duplication
d)
Translocation
16.
When can a mutation be passed on to offspring?
a)
only when the mutation is present during or occurs during mitosis
b)
only when the mutation is present during or occurs during meiosis
c)
when the mutation occurs during mitosis or meiosis
d)
when the mutation occurs in somatic cells
17.

What process occurs during meiosis when chromosomes do not pull apart correctly that can result in chromosomal disorders?

a)

crossing over

b)

non-disjunction

c)

anaphase I

d)

prophase II

18.

CROSSING OVER INCREASES

a)

LIFE SPAN

b)

GENETIC VARIATION

c)

THE NUMBER OF OFF-SPRING

d)

ALL ARE TRUE

19.

CROSSING OVER TAKES PLACE DURING

a)

PROPHASE II

b)

PROPHASE I

c)

INTERPHASE

d)

METAPHASE I

20.

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

21.

MITOSIS

a)

INCREASES GENETIC VARIATION

b)

ALLOWS TRAITS TO BE PASSED ON TO OFFSPRING

c)

PRODUCES 2 IDENTICAL DAUGHTER CELLS

d)

ALL ARE TRUE

22.

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

23.

MEIOSIS PRODUCES 4 CELLS, THEY ARE

a)

N

b)

2N

c)

3N

24.

NORMAL HUMANS HAVE 46 CHROMOSOMES, HOW MANY WILL THE GERM CELLS HAVE AFTER MEIOSIS?

a)

46

b)

23

c)

12

d)

92

25.

The process in the image shows... ?

a)

metaphase

b)

non-disjunction

c)

crossing over

d)

mitosis

26.
A fertilized egg is called
a)
egg
b)
lettuce
c)
zygote
d)
sperm
27.

This law describes how each member of a homologous pair lines up randomly at the metaphase plate and is pulled randomly to one side or another in anaphase I

a)

Law of Segregation

b)

Law of Independent Assortment

c)

Law of Gravity

d)

Law of Mathematical Order

28.

What is the purpose of meiosis?

a)

growth

b)

repair

c)

replacing old cells

d)

sexual reproduction

29.

What is the purpose of mitosis?

a)

sexual reproduction

b)

growth, repair & replace old cells

c)

to increase genetic variation

30.

Cancer cells are different than other cells in your body, this is because they cannot enter G0 and are likely to...

a)

Mutate during G1 phase

b)

Repeat the cell cycle continuously

31.

The activities in the cell cycle occur during specific phases. In which phase is DNA replicated ?

a)

Mitosis

b)

G1 phase

c)

G2 Phase

d)

S Phase

32.

What phase am I?

a)

Interphase

b)

Prophase

c)

Metaphase

d)

Anaphase

e)

Telophase

33.

What phase am I?

a)

Interphase

b)

Prophase

c)

Metaphase

d)

Anaphase

e)

Telophase

34.

What phase am I?

a)

Interphase

b)

Prophase

c)

Metaphase

d)

Anaphase

e)

Telophase

35.

What phase am I?

a)

Interphase

b)

Prophase

c)

Metaphase

d)

Anaphase

e)

Telophase

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