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Meiosis and Genetic Disorders

Total questions: 50

Worksheet time: 44mins

Name
Class
Date
1.

What kind of cells are made in MEIOSIS?

a)

Haploid Gametes

b)

Diploid Somatic Cells

c)

Skin Cells

d)

Liver Cells

2.
If the Diploid number of Carrots is 18, the haploid number is
a)
18
b)
9
c)
27
d)
36
3.
The process of crossing over occurs in what phase of meiosis?
a)
anaphase 1
b)
prophase 1
c)
prophase 2
d)
telophase 1
4.

The cells produced by meiosis are called:

a)

sex cells/gametes

b)

somatic cells

c)

body cells

d)

skin cells

5.

Why do we need meiosis?

a)

To double the number of chromosomes going into sex cells

b)

To reduce to half 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

6.

What is the cause of genetic variation in meiosis?

a)

chromosomes lining up

b)

crossing over of homologous chromosomes

c)

separation of chromosomes

d)

chromosomes pulling apart

7.
How many daughter cells are produced at the end of meiosis?
a)
1
b)
2
c)
3
d)
4
8.

What phase is represented in the image?

a)
metaphase 1
b)
metaphase 2
c)
anaphase 1
d)
anaphase 2
9.
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
10.
The chromosomes that pair up during meiosis, are called __________ chromosomes.  
a)
homozygous 
b)
asexual
c)
homologous
d)
genes
11.
What phase is  shown in the picture?
a)
anaphase 1
b)
anaphase 2
c)
metaphase 1
d)
telophase 1
12.
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
13.

Chromosomes exchange genetic material during _______ in prophase I

a)
crossing over
b)
replication
c)

transcription

d)
translation
14.
Identify the phase.
a)
Metaphase I
b)
Metaphase II
c)
Anaphase I
d)
Anaphase II
15.

Examine the karyotype

a)

This karyotype shows Trisomy 21

b)

This karyotype has no abnormality

c)

This karyotype is missing a sex chromosome (monosomy x)

d)

This karyotype show Trimsomy 13

16.
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)
17.
A pair of identical chromosomes shown in a karyotype, one inherited from mom, and one inherited from dad are called
a)
sister chromotids
b)
centromeres
c)
homologous chromosomes
d)
autosomes
18.
When chromosomes fail to separate correctly during anaphase of meiosis, what can occur?
a)

extra or missing chromosomes are found in the sex cell

b)
chromosomes of the sex cell are doubled
c)
chromosomes of the sex cell are halved
d)
meiosis never completes
19.

Down's syndrome occurs because of a(n)

a)

missing sex chromosome

b)

extra sex chromosome

c)

extra 21st chromosome

d)

extra 18th chromosome

20.

What would you call the failure of one or more pairs of homologous chromosomes or sister chromatids to separate normally during meiosis?

a)

nondisjunction

b)

anaphase I

c)

nondiploidy

d)

karyotype

21.
Photograph of chromosomes grouped in ordered pairs
a)
pedigree
b)
Punnett Square
c)
Venn Diagram
d)
Karyotype
22.
Determine the sex of the individual whose karyotype is displayed in the image.
a)
female
b)
male
23.

A person with Turner's Syndrome is missing a second sex chromosome and is written as

a)

OY

b)

XXY

c)

XO

d)

XX

24.

Chromosome pairs 1-22 are referred to as

a)

sex chromosomes

b)

autosomes

25.
Which would be considered a somatic cell?
a)
Sperm cell
b)
Egg Cell
c)
Skin Cell
d)
All of these
26.
Which of the following would be considered a Gamete cell?
a)
Egg Cell
b)
Sperm Cell
c)
Both of these
d)
None of these
27.
What is it called when a sperm and egg meet?
a)
meiosis
b)
fertilization
c)
cell division
d)
mitosis
28.
Haploid cells have how many chromosomes in humans?
a)
2
b)
23
c)
46
d)
64
29.
What phase do homologous chromosome pairs line up in the center of the cell?
a)
Prophase I
b)
Metaphase I
c)
Metaphase II
d)
Anaphase II
30.
During which phase of the cell cycle does DNA replicate (double)?
a)
Interphase
b)
Prophase
c)
Metaphase
d)
Telophase
31.
a)
Metaphase I
b)
Metaphase II
c)
Anaphase I
d)
Anaphase II
32.
a)
Metaphase I
b)
Metaphase II
c)
Anaphase I
d)
Anaphase II
33.
a)
Prophase I
b)
Prophase II
c)
Telophase I
d)
Telophase II
34.
a)
Prophase I
b)
Prophase II
c)
Telophase I
d)
Telophase II
35.
a)
Metaphase I
b)
Metaphase II
c)
Anaphase I
d)
Anaphase II
36.

During what stage of meiosis does nondisjunction (failure of chromosomes to separate) occur?

a)

anaphase I or II

b)

metaphase I or II

c)

prophase I or II

d)

cytokinesis

37.

True or False? Before cells undergo meiosis they pass through interphase first.

a)

true

b)

false

38.

In Anaphase I, the _________ are separated by the pulling of the spindle fibers to opposite poles of the cell.

a)

homologous pairs of chromosomes

b)

sister chromatids

c)

centromeres

d)

centrosomes

39.

In Anaphase II, the _________ separate.

a)

Homologues

b)

Sister Chromatids

c)

Tetrads

d)

Centrioles

40.

How many cells are formed at the end of Meiosis II?

a)

2

b)

3

c)

4

d)

8

41.

True or False. In Meiosis II, there are TWO cells that go through each phase at the same time.

a)

true

b)

false

42.

Which of the following are CORRECT observations about the differences between MITOSIS and MEIOSIS? (Check all that apply.)

a)

Mitosis produces cells that identical to the parent cell.

b)

Meiosis produces cells that have half the number of chromosomes as the parent cell.

c)

All cells go through INTERPHASE as part of the cell cycle, whether it goes to mitosis or meiosis next.

d)

In both types of cell division, the chromosomes are only duplicated once.

e)

Only in Mitosis, do you see chromosomes pair up to form a tetrad.

43.

Which part of MEIOSIS is identical to MITOSIS?

a)

Meiosis I

b)

Meiosis II

44.

The products of MEIOSIS have _______ number of chromosomes.

a)

haploid

b)

diploid

45.
Identify the mutation in the picture.
a)
Inversion
b)
Duplication
c)
Deletion
d)
Translocation
46.
Identify the mutation in the picture.
a)
Deletion
b)
Inversion
c)
Duplication
d)
Translocation
47.
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
48.
What type of chromosomal mutation has occurred?
a)
substitution
b)
insertion
c)
deletion
d)
nondisjunction
49.

Inversion

a)

When a segment of a chromosome breaks off.

b)

When a segment of a chromosome breaks off, flips, and reattaches.

c)

When a segment of a chromosome is copied or doubles.

d)

When a segment of a chromosome breaks and attaches to a non homologous chromosome.

e)

When entire chromosomes don't separate evenly during meiosis.

50.

What type of mutation changes the structure of chromosomes?

a)

Multiple Point Mutations

b)

Chromosomal Mutation

c)

Structural Mutation

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