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WorksheetsPractice Test 2019 Genetics 2
Total questions: 69
Worksheet time: 1hrs 25mins
Name
Class
Date
1.
In fruit flies, eye color is a sex linked trait. Red (R) is dominant to white (r). What is the sex and eye color of flies with the following genotype: X R X r ?
a)
male with white eyes
b)
female with red eyes
c)
male with red eyes
d)
female with white eyes
2.
In fruit flies, eye color is a sex linked trait. Red (R) is dominant to white (r). What is the sex and eye color of flies with the following genotype: X R Y ?
a)
male with white eyes
b)
female with white eyes
c)
male with red eyes
d)
female with red eyes
3.
What percentage of the offspring will have this recessive disease?
a)
0%
b)
25%
c)
50%
d)
75%
4.
What percentage of the female offspring will be a carrier for this recessive disease?
a)
0%
b)
50%
c)
100%
d)
25%
5.
Looking at this pedigree, how many female family members are carriers?
a)
1
b)
3
c)
10
d)
7
6.
Looking at this pedigree, how many family members have the disease?
a)
4
b)
7
c)
All
d)
None
7.
How many PAIRS of chromosomes do humans have?
a)
23
b)
46
c)
1
d)
2
8.
I have 2 X chromosomes. What am I?
a)
Male
b)
Female
9.
The sex of a child is determined by
a)
whether the father's sperm contains an x or y chromosome
b)
whether the mother's egg contains an x or y chromosome
c)
the age of the parents
10.
Why is the gene for a disease or disorder more likely to be found on the X chromosome than Y?
a)
The X chromosome has many more genes
b)
The Y chromosome has many more genes
11.
Males are more likely to suffer from a sex-linked disease or disorder because
a)
males are the weaker sex
b)
males have less DNA
c)
males have 1 X chromosome, so the disorder is more likely to be expressed
12.
When we say that a woman is a carrier for a genetic disease or disorder it means that
a)
she has 1 gene, but not the disorder
b)
she has 2 genes for the disorder
c)
she can pass the gene only to male children
d)
she can pass the gene only to female children
13.
If a gene is found only on the X chromosome and not the Y chromosome, it is said to be
a)
sex-linked trait
b)
polygenic trait
c)
codominant trait
d)
incomplete dominance trait
14.
Hemophilia is a recessive x-linked disorder.
Which genotype represents a female who is a carrier for hemophilia?
Which genotype represents a female who is a carrier for hemophilia?
a)
XHXh
b)
XhXh
c)
XHXH
d)
XhY
15.
Which of the following genotypes belongs in the red box in the Punnett square?
a)
XBXB
b)
XbXb
c)
XbY
d)
XBY
16.
Duchenne muscular dystrophy is a recessive x-linked disorder.
According to the Punnett square, what percentage of male offspring will have the disorder?
According to the Punnett square, what percentage of male offspring will have the disorder?
a)
0%
b)
25%
c)
50%
d)
100%
17.
Hemophilia is a recessive x-linked disorder. According to the Punnett square, what percentage of offspring will have the disorder?
a)
0%
b)
25%
c)
50%
d)
100%
18.
What do half colored symbols represent?
a)
The individual is a carrier (heterozygous).
b)
The individual expresses the trait.
c)
The individual has both recessive alleles.
d)
The individual has both dominant alleles.
19.
Is this trait (the shaded individuals) dominant or recessive?
a)
dominant
b)
recessive
20.
Which gender can be carriers of colorblindness and not have it?
a)
Just males
b)
Just females
c)
Both genders
21.
How many generations are shown in this pedigree?
a)
1
b)
2
c)
3
d)
4
22.
If this pedigree shows an recessive disorder, what MUST the genotype of individual II-3 be?
a)
HH
b)
Hh
c)
hh
d)
None of the above
23.
How many people in this whole pedigree have the trait/disease?
a)
2
b)
3
c)
4
d)
6
24.
There are no carriers for Huntington's Disease- you either have it or you don't. Is Huntington's disease caused by a dominant or recessive trait?
a)
Dominant
b)
Recessive
25.
This pedigree represents the inheritance of hemophilia in this family. How many of the females have the hemophilia trait?
a)
8
b)
5
c)
2
d)
3
26.
Huntington's Disease is a dominant trait.
What is the correct genotype for individual I-2?
What is the correct genotype for individual I-2?
a)
HH
b)
Hh
c)
hh
d)
H_
27.
Does this pedigree show a dominant or recessive trait?
a)
Dominant
b)
Recessive
28.
What type of heredity is shown in the pedigree?
(hint: check your notes - "modes of inheritance")
(hint: check your notes - "modes of inheritance")
a)
Sex-Linked Dominant
b)
Sex-Linked Recessive
c)
Autosomal Dominant
d)
Autosomal Recessive
29.
If this pedigree shows an autosomal recessive disorder, what MUST the genotype of individual II-3 be?
a)
HH
b)
Hh
c)
hh
d)
None of the above
30.
If this pedigree shows a recessive disorder, what MUST the genotype of individual 4 be?
a)
HH
b)
Hh
c)
hh
31.
If this pedigree shows the inheritance of a dominant trait, then what must be the genotype of the two affected kids in the 3rd generation?
a)
DD
b)
Dd
c)
dd
32.
The genotypes of the couple in the 3rd generation
a)
must be AA x AA
b)
must be Aa x Aa
c)
must be Aa x aa
d)
must be aa x aa
33.
The genotype of the affected son and daughter at the bottom of this pedigree...
a)
could be homozygous dominant
b)
could be homozygous recessive
c)
could be heterozygous
d)
Can't tell
34.
Hemophilia is a recessive sex-linked trait. If H = normal & h = has hemophilia, which genotype represents a male with hemophilia.
a)
XHY
b)
XHXh
c)
XhXh
d)
XhY
35.
Imagine the shaded individuals are those WITH a "hitchhikers thumb." What must be the genotype of individual II-1?
a)
TT
b)
tt
c)
Tt
d)
Impossible to tell
36.
Is this trait (the shaded individuals) dominant or recessive?
a)
dominant
b)
recessive
37.
The genotype of the affected son and daughter at the bottom of this pedigree...
a)
must be homozygous dominant
b)
must be homozygous recessive
c)
could be heterozygous
38.
What is the mode of inheritance shown here?
a)
Recessive
b)
Sex Linked
c)
Dominant
39.
Mike has type O blood. Mike can donate blood to someone who is type AB.
a)
True
b)
False
40.
Someone with type A blood can receive blood from someone who is type AB.
a)
True
b)
False
41.
Jim has type AB+ blood. His dad could be type O+.
a)
True
b)
False
42.
Mike has type O+ blood. Mike can receive blood from someone who has Type A or Type B.
a)
True
b)
False
43.
If one of your parents is blood type A and the other is type B, which of the following blood types would you likely be?
a)
O
b)
AB
c)
A or B
d)
Any
44.
An individual's blood type is determined by
a)
environment
b)
genetics
c)
both environment and genetics
d)
your children's blood type
45.
Universal blood donors have type ______ blood.
a)
A
b)
AB
c)
B
d)
O
46.
If two parents are heterozygous for type A blood, what is the probability that their offspring would have type O blood?
a)
100 %
b)
75%
c)
50%
d)
25%
47.
If a father is AA and a mother is AB, what is the probability for a child with AB blood?
a)
0%
b)
25%
c)
50%
d)
75%
48.
If two parents have type AB blood, what is the probability that their child will have type O blood?
a)
0%
b)
25%
c)
50%
d)
100%
49.
Which of the following is purebred?
a)
AA
b)
oo
c)
Ao
d)
Both AA and oo
50.
Which of the following is a hybrid?
a)
BB
b)
oo
c)
Bo
d)
AA
51.
What types of blood can a person with AB RECEIVE?
a)
B only
b)
AB, A, B, O
c)
AB and O only
d)
A only
52.
If two parents are heterozygous for type A blood, what is the probability that their offspring would have type O blood?
a)
100 %
b)
75%
c)
50%
d)
25%
53.
What would indicate a normal human male?
a)
XX
b)
X
c)
XY
d)
XXY
54.
What is the gender of the individual whose karyotype is seen in the image?
a)
Male
b)
Female
55.
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
56.
Chromosome pairs 1-22 are referred to as
a)
sex chromosomes
b)
sister chromatids
c)
a karyotype
d)
autsomes
57.
A normal human has ___ pairs of autosomes and ___ pair(s) of sex chromosomes.
a)
23,1
b)
22,1
c)
1, 22
d)
1, 23
58.
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
59.
A human zygote should have _____ chromosomes inside.
a)
46
b)
23
c)
92
d)
64
60.
Which would be considered a somatic cell?
a)
Sperm cell
b)
Egg Cell
c)
Skin Cell
d)
All of these
61.
Which of the following would be considered a Gamete cell?
a)
Egg Cell
b)
Sperm Cell
c)
Both of these
d)
None of these
62.
A normal human zygote should have _____ chromosomes inside.
a)
46
b)
23
c)
92
d)
64
63.
Chromosome pairs 1-22 are referred to as
a)
sex chromosomes
b)
sister chromatids
c)
a karyotype
d)
autsomes
64.
The X and Y chromosomes are known as the ___ chromosomes.
a)
sex
b)
autosome
c)
biological
d)
genetic
65.
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
66.
Which sex chromosomes would indicate a typical human male?
a)
XX
b)
X
c)
XY
d)
XXY
67.
How many girls in this family express this recessive disorder?
a)
4
b)
5
c)
6
d)
7
68.
What do half colored symbols represent?
a)
The individual is a carrier.
b)
The individual expresses the trait.
c)
The individual has both recessive alleles.
d)
The individual has both dominant alleles.
69.
chromosomes that have the same sequence of genes and the same structure
a)
homologous chromosomes
b)
alleles
c)
phenotypes
d)
genotypes
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