WorksheetsGenetics
Total questions: 66
Worksheet time: 42mins
Name
Class
Date
1.
What gender has an X and a Y chromosome?
a)
male
b)
female
c)
transgender
d)
all of the above
2.
How many generations are shown in this pedigree?
a)
1
b)
2
c)
3
d)
4
3.
Which individual in the first generation is a carrier?
a)
The male
b)
The female
c)
individual 1
d)
None of the above
4.
How many kids did the mother and father from the first generation have?
a)
2
b)
4
c)
5
d)
6
5.
In the second generation-how many people have the disease or display the physical trait?
a)
2
b)
4
c)
5
d)
6
6.
In the second generation-how many people are carriers of the trait?
a)
2
b)
3
c)
5
d)
6
7.
How many people in this whole pedigree have the trait/disease?
a)
2
b)
3
c)
4
d)
6
8.
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
9.
How are individuals I-2 and III-5 related?
a)
Grandpa and grandson
b)
Mom and son
c)
Uncle and nephew
d)
Grandma and grandson
10.
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_
11.
Does this pedigree show a dominant or recessive trait?
a)
Dominant
b)
Recessive
12.
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.
13.
the passing of genetic traits from parent to offspring.
a)
heredity
b)
trait
c)
gene
d)
allele
14.
An allele whose trait always shows up in the organism when the allele is present.
a)
recessive allele
b)
dominant allele
c)
hidden allele
d)
present allele
15.
An allele whose trait only shows up when no dominant allele is present.
a)
hidden allele
b)
dominant allele
c)
recessive allele
d)
present allele
16.
one set of instructions for an inherited trait
a)
heredity
b)
allele
c)
trait
d)
gene
17.
one of the alternative forms of a gene that governs a characteristic, such as hair color
a)
allele
b)
gene
c)
trait
d)
DNA
18.
an organism's appearance or other detectable characteristic
a)
genotype
b)
phenotype
c)
genetics
d)
heterozygous
19.
genetic makeup
a)
phenotype
b)
genotype
c)
heterzygous
d)
allele
20.
the chances of something happening
a)
dominant
b)
genotype
c)
phenotype
d)
probability
21.
having two of the same genes for the trait (sometimes called purebred).
a)
homozygous
b)
hetrozygous
c)
protein
d)
chromosome
22.
having two different genes for a trait (sometimes called hybrid).
a)
protein
b)
homozygous
c)
heterozygous
d)
genotype
23.
father of genetics
a)
Gregor Mendel
b)
James Watson
c)
Dr. Robbins
d)
Francis Crick
24.
Complex molecules which make up structures and carry out functions of an organism
a)
protein
b)
chromosome
c)
DNA
d)
gene
25.
A single piece of coiled DNA found in the cells; contains genes that encode traits.
a)
gene
b)
chromosome
c)
trait
d)
DNA
26.
A characteristic that an organism can pass on to its offspring through its genes
a)
protein
b)
trait
c)
DNA
d)
gene
27.
Complex molecule that carries genetic information that defines an organism's traits. It is stored in the nucleus.
a)
DNA
b)
protein
c)
RNA
d)
glucose nucleic acid (GNA)
28.
Genotype refers to the ...
a)
physical expression of the genes
b)
the possible combination of alleles in a gene
c)
whether an allele is dominant or recessive
d)
how an organism will appear
29.
The man who studied genetics and came up with genetics is
a)
Watson
b)
Crick
c)
Mendel
d)
Darwin
30.
A homozygous dominant dog with brown fur is crossed with a heterozygous dog with brown fur. What are the percentages of the possible genotypes?
a)
100% BB
b)
75% BB and 25%Bb
c)
50 % BB and 50% Bb
d)
50% Bb and 50% bb
31.
Squidward has light blue skin, and his genotype for this trait is Bb. Would Squidward be considered a purebred or hybrid for light blue skin?
a)
Purebred
b)
Hybrid
32.
An offspring will receive how many alleles from each parent to determine a specific trait?
a)
one
b)
two
c)
three
d)
five
33.
Which of the following is a phenotype?
a)
BB
b)
Bb
c)
bb
d)
Blue eyes
34.
What is a phenotype
a)
The genetic make up (code)
b)
The physical trait
35.
the passing of genetic traits from parent to offspring.
a)
heredity
b)
trait
c)
gene
d)
allele
36.
having two of the same genes for the trait (sometimes called purebred).
a)
homozygous
b)
hetrozygous
c)
protein
d)
chromosome
37.
having two different genes for a trait (sometimes called hybrid).
a)
protein
b)
homozygous
c)
heterozygous
d)
genotype
38.
Magda is a tall, 11 year old drummer. She has a scar on her right cheek. She is good at swimming. Which of her traits did Magda most likely inherit?
a)
height
b)
the scar
c)
ability to swim
d)
ability to play drums
39.
Two brown eyed parents (Bb) have a baby. What is the chance the baby is blue eyed?
a)
0 %
b)
25%
c)
50%
d)
75%
40.
G = green, g = yellow
The genotype for a yellow plant is...
The genotype for a yellow plant is...
a)
GG
b)
Gg
c)
gg
d)
all of the choices result in yellow
41.
An allele whose trait only shows up when no dominant allele is present.
a)
hidden allele
b)
dominant allele
c)
recessive allele
d)
present allele
42.
Two heterozygous (Tt) tall pea plants are crossed. Which describes their offspring?
a)
50% tall and 50% short
b)
75%tall and 25% short
c)
100%short
43.
Which answer best describes codominant alleles?
a)
Both are equally dominant
b)
Both are equally recessive
c)
Neither are dominant or recessive
44.
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%
45.
B=brown eyes
b= blue eyes
What is true about two brothers that have brown eyes?
One has genotype BB the other Bb.
b= blue eyes
What is true about two brothers that have brown eyes?
One has genotype BB the other Bb.
a)
they have same phenotype and genotype
b)
they have different genotypes and phenotypes
c)
they have same phenotype but different genotypes
d)
they have same genotype but different phenotypes
46.
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
47.
This is an example of what?
a)
Complete dominance
b)
Incomplete dominance
c)
Codominance
d)
None of the above
48.
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
49.
If T=Tall & t=short, what is the genotypic ratio?
a)
1:3
b)
3:1
c)
1:2:1
d)
2:2
50.
Two brown eyed parents (Bb) have a baby. What is the chance the baby is blue eyed?
a)
0 %
b)
25%
c)
50%
d)
75%
51.
A heterozygous yellow pea plant's genotype would be:
a)
YY
b)
yy
c)
Yy
d)
Yg
52.
Which process and type of resulting cells are represented?
a)
mitosis, gametes
b)
mitosis, body cells
c)
meiosis, gametes
d)
meiosis, body cells
53.
The inherited combination of alleles is known as the offspring's
a)
heredity
b)
phenotype
c)
genotype
d)
redigree
54.
An organism's appearance is known as its
a)
heredity
b)
phenotype
c)
genotype
d)
pedigree
55.
What is the study of how traits are passed from parents to offspring?
a)
heredity
b)
DNA
c)
genotype
d)
genetics
56.
What did Mendel use for his experiments?
a)
rats
b)
carrots
c)
succulents
d)
pea plants
57.
An uppercase letter represents what type of trait
a)
dominant
b)
recessive
c)
blending
d)
masking
58.
A lowercase letter represents what type of trait
a)
dominant
b)
recessive
c)
blending
d)
masking
59.
What holds "the code" that determines your phenotype?
a)
genotype
b)
genetics
c)
heredity
d)
allele
60.
How many alleles do we have for each trait?
a)
1
b)
2
c)
3
d)
4
61.
Select the homozygous recessive genotype
a)
AA
b)
aa
c)
Aa
62.
Select the homozygous dominant genotype
a)
AA
b)
aa
c)
Aa
63.
Select the heterozygous genotype
a)
AA
b)
aa
c)
Aa
64.
If an animal has a homozygous recessive genotype, which trait would be expressed?
a)
recessive trait
b)
dominant trait
65.
If an animal has a homozygous dominant genotype, which trait would be expressed?
a)
recessive trait
b)
dominant trait
66.
If an animal has a heterozygous genotype, which trait would be expressed?
a)
recessive trait
b)
dominant trait
100 %
