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WorksheetsHuman Genetics
Total questions: 50
Worksheet time: 39mins
Name
Class
Date
1.
A chart that traces the history of traits in a particular family
a)
DNA
b)
pedigree
c)
chromosome
d)
variation
2.
Characteristics that are passed down from parents to offspring.
a)
Manners
b)
Acquired Traits
c)
Money
d)
Inherited Triats
3.
Two identical alleles for a trait is known as
a)
homozygous
b)
heterozygous
c)
mutation
d)
codominance
4.
A mutation is harmful to an organism if it
a)
changes the phenotype of an organism
b)
changes the DNA segment
c)
reduces the organism's chance of survival
d)
makes the organism better able to avoid predators
5.
In a punnet square where are the parent alleles written?
a)
Top and inside the boxes
b)
Only on the left and right side of the boxes.
c)
outside of the boxes (top and left side)
d)
All on the top side of the boxes
6.
G = dominant green and y = recessive yellow
A fish has a Gy genotype, what will its phenotype be?
A fish has a Gy genotype, what will its phenotype be?
a)
yellow
b)
green
c)
greenish-yellow
d)
red
7.
xx-xy type of sex determination is found in
a)
human beings
b)
many other mammals
c)
amphibia
d)
some fishes
8.
In which insect among the following,the female is heterogametic ?
a)
Queen bee
b)
Butterfly
c)
Grasshopper
d)
Cockroach
9.
Write the name of scientist
a)
Gregor Mendel
b)
Darwin
c)
Lamark
d)
none of the above
10.
The inheritance of short wings in Drosophila fruit flies is an x-linked, recessive trait. Which would most likely
result if a short-winged female mates with a long-winged male?
result if a short-winged female mates with a long-winged male?
a)
All offspring will be short-winged.
b)
All females will be long-winged, and all males will be short-winged.
c)
All females will be short-winged, and all males will be long-winged.
d)
Half of the males and females will be short-winged, and half will be long-winged.
11.
A parent with Type A blood and a parent with Type O blood have a child. Which of the following is a possible genotype of their offspring?
a)
I A I A
b)
I A i
c)
I b i
d)
ii
12.
Which term is correctly matched with the description?
a)
Co-dominance occurs when two traits blend together to form a new phenotype.
b)
Human skin color is an example of codominant trait.
c)
Incomplete dominance occurs when traits blend producing a third phenotype.
d)
Human blood type is not an example of multiple alleles.
13.
Colorblindness is a sex-linked recessive trait. A mother with normal color-vision and a colorblind father have a
color-blind daughter. Which of the following statements is correct?
color-blind daughter. Which of the following statements is correct?
a)
All of their daughters will be colorblind
b)
The mother is a carrier of the colorblindness gene
c)
All of their sons will have normal color vision
d)
All of their sons will be colorblind.
14.
Which disease most likely occurs after excessive exposure to ultraviolet radiation?
a)
Malaria
b)
Asthma
c)
Skin Cancer
d)
Polio
15.
Which genetic abnormality can be identified through karyotyping?
a)
Point mutation
b)
Recessive allele
c)
Extra chromosome
d)
Sex-linked allele
16.
A couple has five children, all with
blood type A. The mother’s blood type
is O, and the father’s blood type is A.
Based on this information, which
describes the most probable genotype
of the father?
blood type A. The mother’s blood type
is O, and the father’s blood type is A.
Based on this information, which
describes the most probable genotype
of the father?
a)
diploid
b)
haploid
c)
heterozygous
d)
homozygous
17.
In a certain fish, blue (FB) scales and red (FR) scales are codominant. When a fish has the genotype FBFR, it has a patchwork of blue and red scales. Cross two heterozygous. What are the chances of an offspring being patchwork?
a)
1 out of 4 or 25%
b)
2 out of 4 or 50%
c)
3 out of 4 or 75%
d)
4 out of 4 or 100%
18.
Colorblindness is a recessive, X chromosome sex-link disorder. Cross the parents to figure out which percentage of their offspring will be colorblind.
a)
25%
b)
0%
c)
75%
d)
50%
19.
Mendel's Law of ______ states that alleles separate from each other during the formation of games.
a)
segregation
b)
independent assortment
c)
dominance
d)
conservation of mass
20.
What is the gender of individual #1 of the first generation?
a)
male
b)
female
21.
Which statement is true about this karyotype?
a)
this person is normal
b)
this person is missing chromosome pair 23
c)
this person is missing an X chromosome
d)
this person has defective chromosomes
22.
What is the haploid number for this Karyotype?
a)
26
b)
27
c)
52
d)
54
23.
Which genetic abnormality is shown in this karyotype?
a)
Partial Addition
b)
Partial Deletion
c)
Trisomoy
d)
Monosomy
24.
The inherited disease in which hemoglobin molecules clump into long fibers, changing the shape of blood cells.
a)
Cystic fibrosis
b)
Sickle Cell Disease
c)
Huntington's Disease
d)
Klinefelter's Disease
25.
Colorblindness is more common in males than in females because
a)
Fathers pass the allele for colorblindness to their sons only
b)
The allele for colorblindness is located on the Y chromosome.
c)
The allele for colorblindness is recessive and located on the X chromosome.
d)
Males who are colorblind have two copies of the allele for colorblindness.
26.
How many chromosomes are shown in a normal human karyotype?
a)
2
b)
12
c)
25
d)
46
27.
What is the probability that a human sperm cell will carry a X chromosome?
a)
50%
b)
100%
c)
25%
d)
0%
28.
Photograph of chromosomes grouped in ordered pairs
a)
pedigree
b)
Punnett Square
c)
Venn Diagram
d)
Karyotype
29.
Error in meiosis in which homologous chromosomes fail to separate
a)
nondisjunction
b)
sex-linked recessive
c)
autosomal dominant
d)
autosomal recessive
30.
Chart that shows the relationships within a family
a)
Pedigree
b)
Karyotype
c)
T chart
d)
Key
31.
Autosomes
a)
Chromosomes 1-22
b)
Sex Chromosomes
c)
Oldsmobile
d)
gamete
32.
Down Syndrome is an example of
a)
Sex-linked disorderr
b)
Autosomal disorder
c)
nondisjunction
33.
An example of a trait that is determined by multiple alleles.
a)
Cystic Fibrosis
b)
Colorblindness
c)
ABO Blood Type
d)
Down Syndrome
34.
If a man does not have hemophilia (X linked trait), what percentage of his daughters will have hemophilia?
a)
100%
b)
75%
c)
50%
d)
0%
35.
A boy who is colorblind inherited the disorder from his
a)
Mother
b)
Father
c)
Either Parent
d)
None of the above
36.
Humans have 23 pairs of chromosomes, 22 of the pairs are called___________.
a)
Polyploids
b)
Nondisjuction
c)
Autosomes
d)
Sex Chromosomes
37.
Which of the following pairs of genotypes result in the same phenotype?
a)
IAIA and IAIB
b)
IBIB and IBi
c)
IBIB and IAIB
d)
IBi and ii
38.
Karyotypes are useful for detecting _______.
a)
Missing or extra chromosomes
b)
All genetic disorders
c)
Cystic Fibrosis
d)
Huntington's Disease
39.
If a trait is X-linked, males pass the X-linked allele to ________ of their daughters.
a)
None
b)
1/4
c)
1/2
d)
All
40.
A person with Down syndrome has ______ copies of chromosome 21.
a)
1
b)
2
c)
3
d)
4
41.
The full set of genetic information in an organism's DNA.
a)
Karyotype
b)
Pedigree
c)
Genome
d)
Autosome
42.
This karyotype is taken from a ___________.
a)
normal female
b)
normal male
c)
male with Klinefelter's syndrome
d)
female with Turner's syndrome
43.
Which disorder is characterized by the inability to break down a specific amino acid and can be treated by a special diet?
a)
Huntington's
b)
Tay Sachs
c)
Cystic fibrosis
d)
PKU
44.
This karyotype is taken from a ________.
a)
female with Turner's syndrome
b)
male with Down's syndrome
c)
female with Down's syndrome
d)
normal female
45.
Which genetic disorder is sex-linked?
a)
Huntington's
b)
cystic fibrosis
c)
red-green colorblindness
d)
sickle cell anemia
46.
Which blood type is considered the universal recipient?
a)
Type A
b)
Type B
c)
Type AB
d)
Type O
47.
How many phenotypes are there in ABO blood types?
a)
3
b)
4
c)
6
d)
12
48.
What do the shaded shapes represent?
a)
normal individuals
b)
individuals who have the trait
c)
carriers
d)
deceased
49.
AB blood type is an example of what type of inheritance?
a)
complete dominance
b)
incomplete dominance
c)
codominance
d)
polygenic inheritance
50.
There are many variations in skin color that can be inherited based on the combination of alleles that you inherit from your mom and dad. This bell curve distribution is an example of
a)
incomplete dominance
b)
codominance
c)
multiple alleles
d)
polygenic inheritance
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