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WorksheetsGenetics Practice 2020
Total questions: 62
Worksheet time: 1hrs 3mins
Name
Class
Date
1.
What is a phenotype?
a)
The expression of a trait; what you see.
b)
refers to the genetic makeup of an individual
c)
An organism that has the same genes for a trait (ex. TT or tt)
d)
the passing of traits from parent to offspring
2.
The inherited combination of alleles is known as the offspring's
a)
heredity
b)
phenotype
c)
genotype
d)
redigree
3.
An organism's appearance is known as its
a)
heredity
b)
phenotype
c)
genotype
d)
pedigree
4.
Sex cells are produced through the process of
a)
mitosis
b)
cytokinesis
c)
binary fission
d)
meiosis
5.
What does heterozygous mean?
a)
An organism that has the same genes for a trait (TT or tt)
b)
An organism that has different genes for a trait (Tt)
c)
When neither gene is fully dominant; offspring is a mixture of both
d)
the different forms of a trait (hair color--> brown, blonde, red
6.
A heterozygous yellow pea plant's genotype would be:
a)
YY
b)
yy
c)
Yy
d)
Yg
7.
If a heterozygous tall pea plant is crossed with a short pea plant, what are the possible genotypes of the future offspring?
a)
100% Tt
b)
50% Tt, 50% tt
c)
75%Tt, 25%tt
d)
25%TT, 50%Tt, 25%tt
8.
A dog gives birth to 5 puppies. What percentage of the chromosomes does each puppy share with the mother?
a)
25%
b)
50%
c)
75%
d)
100%
9.
A gene is
a)
a section of DNA
b)
a chemical found in the nucleus of cells
c)
contains instructions for building a protein
d)
all of the above
10.
During meiosis, one parent cell gives rise to how many daughter cells?
a)
1
b)
2
c)
3
d)
4
11.
What does DNA stand for?
a)
Deoxyribonucleic Acid
b)
Deoxyribose Enzymes
c)
Deoxyribose Messenger
d)
Retro deoxyribose Acis
12.
Who was the father of genetics
a)
Sagan
b)
Issac Newton
c)
Gregor Mendel
d)
C.jenkins
13.
One form of a gene is called_______________
a)
a DNA
b)
a Phenotype
c)
a trait
d)
an allele
14.
What is so unique about these cells?
a)
They do not contain a nucleus
b)
They do not contain water
c)
They contain iron
d)
They are not actually red
15.
Which of the following is homozygous recessive?
a)
Tt
b)
tt
c)
TT
d)
T
16.
Which of the following is a phenotype?
a)
Aa
b)
red hair
c)
heterozygous
d)
DNA
17.
Which of these can you NOT inherit?
a)
hair color
b)
height
c)
scars
d)
skin tone
18.
If R is brown hair and r is blond hair, which genotype will have blond hair?
a)
RR
b)
Rr
c)
rr
d)
all of these will be blonde
19.
The likelihood that a specific event will occur:
a)
accountability
b)
dominant
c)
probability
d)
recessive
20.
When the two alleles of a particular gene are different:
a)
heterozygous
b)
homozygous
c)
genotype
d)
phenotype
21.
A diagram used to predict the outcomes of a genetic cross:
a)
karyotype
b)
Punnett Square
c)
Pedigree
d)
Venn diagram
22.
A family history that shows how a trait is inherited:
a)
karyotype
b)
Punnett square
c)
pedigree
d)
hybrid
23.
Group of offspring produced by a given set of parents:
a)
generation
b)
family
c)
characters
d)
partners
24.
An inherited disease:
a)
karyotype
b)
pedigree
c)
genetic disorder
d)
phenotype
25.
The passing of genetic traits from parents to offspring:
a)
geneology
b)
heredity
c)
cellology
d)
physiology
26.
This picture shows what the red blood cell of someone with sickle cell anemia. This disorder is carried on the X chromosome and is most common in sub-saharan populations. What type of inheritance pattern must it follow?
a)
codominance
b)
sex-linked inheritance
c)
multiple allele inheritance
d)
incomplete dominance
27.
This diagram represents what type of inheritance pattern?
a)
sex-linked inheritance
b)
complete dominance
c)
codominance
d)
incomplete dominance
28.
How many phenotypes are there in ABO blood types?
a)
3
b)
4
c)
6
d)
12
29.
What is this diagram called? What do the circles represent?
a)
karyotype, males
b)
karyotype, females
c)
pedigree, females
d)
pedigree, males
30.
What is this tool used for?
a)
to compare DNA of two individuals
b)
read braille
c)
analyze genetic disorders in many generations of individuals
d)
analyze genetic disorders in one individual
31.
How many children do #5 & #6 have?
a)
1 male child
b)
2 male and 2 female children
c)
2 male children
d)
1 daughter and 1 son
32.
What do the shaded shapes represent?
a)
normal individuals
b)
individuals who have the trait
c)
carriers
d)
deceased
33.
ABO blood types are an example of what type of inheritance?
a)
multiple alleles
b)
incomplete dominance
c)
polygenic inheritance
d)
genetic mutations
34.
AB blood type is an example of what type of inheritance?
a)
complete dominance
b)
incomplete dominance
c)
codominance
d)
polygenic inheritance
35.
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
36.
If this image were real, it would represent what type of inheritance?
a)
incomplete dominance
b)
codominance
c)
polygenic inheritance
d)
compete dominance
37.
Chromosome pairs #s 1-22 are called
a)
mutations
b)
genosomes
c)
sex chromosomes
d)
autosomes
38.
The image shows the pattern of inheritance for colorblindness. From this diagram we can tell that colorblindness is
a)
a codominant trait
b)
a sex-linked trait
c)
carried on the Y chromosome
d)
is associated with a dominant allele
39.
What is the diploid number in human cells?
a)
2
b)
23
c)
46
d)
92
40.
What is the result of meiosis?
a)
2 daughter cells that are haploid and genetically different
b)
2 daughter cells that are haploid & identical
c)
4 daughter cells that are diploid & genetically different
d)
4 daughter cells that are haploid & genetically different
41.
What is the percentage of a homozyogus dominant offspring?
a)
75%
b)
50%
c)
25%
d)
0%
42.
What percentage of the offspring will be purebred dominant?
a)
0%
b)
25%
c)
50%
d)
75%
43.
What percentage of the female offspring will be a carrier for this recessive disease?
a)
0%
b)
50%
c)
100%
d)
25%
44.
Looking at this pedigree, how many female family members are carriers?
a)
1
b)
3
c)
10
d)
7
45.
If a woman is a carrier for a sex linked recessive trait of hemophilia and her husband has hemophilia, which of the following is true? Make a punnett square!
a)
All sons will have hemophilia
b)
all daughters will have hemophilia
c)
50% of daughters and 50% of sons have hemophilia
d)
100% of sons have hemophilia and 100% of daughters are carriers
46.
A calico cat shows both the traits for orange fur and black fur. What kind of allele expression is this?
a)
Incomplete Dominance
b)
Co dominance
c)
Independent assortment
d)
Recessive inheritance
47.
What type of inheritance do two alleles have if their traits blend together?
a)
Incomplete Dominance
b)
Co-Dominance
c)
Mendelian Inheritance
d)
Homozygous Inheritance
48.
In some carnations, flower color exhibits codominance. When crosses, Red (R) and white (W) flowers make speckled flowers (RW) that show both colors.
Complete a cross between A speckled flower and a red flower. Find the phenotype ratio.
Complete a cross between A speckled flower and a red flower. Find the phenotype ratio.
a)
2 red: 2 speckled: 0 white
b)
4 red: 0 speckled: 0 white
c)
0 red: 4 speckled: 0 white
d)
0 red: 2 speckled: 2 white
49.
A roan cow shows co-dominance in fur color (orange and white). What is the phenotype ratio expected if a roan cow and a roan steer mate together?
a)
4: Orange and White
b)
1: Orange : 1 White
c)
2 Orange: 2 Orange and White: 0 White
d)
1: Orange: 2 Orange and White: 1 White
50.
A red flowered plant (RR) breeds with a White flowered plant (WW). The gene for petal color in these plants expresses incomplete dominance. What percentage of the offspring will have pink (RW) flowers?
a)
0%
b)
25%
c)
50%
d)
100%
51.
What are the gametes for BbDd?
(USE FOIL)
(USE FOIL)
a)
B, b, D, d
b)
BD, bD, Bd, bd
c)
BD, BD, Bd, bd
d)
bD, bD, bd, bd
52.
Based off this punnett square, what fraction of the offspring will have wrinkled, yellow seeds?
a)
9/16
b)
3/16
c)
1/16
d)
16/16
53.
A male beetle has the genotype Ttbb. If this beetle mates with a female with genotype TTBb, what is the chance their offspring will have the genotype TtBb?
a)
3/16
b)
4/16
c)
8/16
d)
12/16
54.
What goes in box 1
a)
AABb
b)
AABB
c)
aabb
d)
AaBb
55.
What goes in box 15
a)
abab
b)
ABAB
c)
aBaB
d)
AbAb
56.
circumstance where the expression of one gene is affected by the expression of one or more independently inherited genes
a)
epigenetics
b)
epistasis
c)
epigenome
d)
enzyme
57.
A couple that have a family history of a genetic disorder might wish to receive advice from a ___________.
a)
mutated allele
b)
genetic counsellor
c)
family doctor
d)
brother or sister
58.
What genetic disorder causes the body to produce unusually thick mucus in the lungs and intestines?
a)
Cystic Fibrosis
b)
Sickle Cell
c)
Down Syndrome
d)
Hemophilia
59.
Often, a child with Tay-Sachs won't live past ____ years.
a)
2
b)
1
c)
3
d)
4
60.
How does a child get Tay-Sachs?
a)
Bacteria Infection
b)
Both mom & dad have to be carriers of the gene
c)
Unknown
d)
Mom has allergies
61.
severe genetic disorder involving hyperkeratosis- usually affects infants; characterized by a thickening of the keratin layer, skin contains massive diamond-shaped scales, and tends to have a reddish color
a)
Ringworm (tinea corporis)
b)
Rosacea
c)
urticaria
d)
harlequin-type ichthyosis
62.
Which genetic disorder is caused by a dominant allele?
a)
Huntington's
b)
Hemophilia
c)
Cystic fibrosis
d)
PKU
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