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WorksheetsKaryotypes and Nondisjunction
Total questions: 21
Worksheet time: 11mins
Name
Class
Date
1.
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 is from a gamete
2.
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
3.
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)
4.
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
5.
Nondisjunction can result in
a)
trisomy conditions
b)
monosomy conditions
c)
additional sex chromosomes
d)
all of these
6.
Down's syndrome occurs because of a(n)
a)
missing sex chromosome
b)
extra sex chromosome
c)
additional 21st chromosome
d)
additional 18th chromosome
7.
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
8.
Determine the sex of the individual whose karyotype is displayed in the image.
a)
female
b)
male
9.
Determine the sex of the individual whose karyotype is displayed in the image.
a)
female
b)
male
10.
Which structure is labeled as A in the diagram?
a)
Centromere
b)
Chromosome
c)
Sister chromatids
11.
Which structure is labeled as B in the diagram?
a)
Centromere
b)
Chromosome
c)
Sister chromatids
12.
A sperm contains
a)
Both an X and a Y chromosome
b)
Two X chromosomes
c)
An X OR a Y chromosome
d)
only a Y chromosome
13.
An egg contains
a)
22 autosomes and an X chromosome
b)
22 autosomes and an Y chromosome
c)
44 autosomes and 2 X chromosomes
d)
44 autosomes and an X and a Y chromosome
14.
What makes this individual's karyotype not normal?
a)
An extra sex chromosome
b)
An extra autosome
c)
A missing sex chromosome
d)
A missing autosome
15.
What is the sex of this individual?
a)
female
b)
male
16.
What is the sex of this individual?
a)
female
b)
male
17.
What is the sex of this individual?
a)
female
b)
male
18.
Turner's Syndrome, as shown in this karyotype, has a karyotype notation of
a)
47XX+21
b)
47XXY
c)
45XO
d)
44XX
19.
Klinefelter's Syndrome as shown in this karyotype has a notation of
a)
47XX+21
b)
47XXY
c)
45XO
d)
44XX
20.
Chromosome pairs 1-22 are referred to as
a)
sex chromosomes
b)
sister chromatids
c)
a karyotype
d)
autosomes
21.
A picture of paired chromosomes is a
a)
sister chromatid
b)
centromere
c)
syndrome
d)
karyotype
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