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WorksheetsHeredity
Total questions: 29
Worksheet time: 17mins
Name
Class
Date
1.
Which of the following is Heterozygous?
a)
Two of the same recessive allele (aa)
b)
Two of the same dominant allele (AA)
c)
Two different alleles (Aa)
d)
Two different genes (AB)
2.
Which of the following is Homozygous Recessive?
a)
AA
b)
Aa
c)
aa
d)
aA
3.
Which of the following is Homozygous Dominant?
a)
RR
b)
rr
c)
Rr
d)
Rp
4.
Brown eyes (B) are dominant to blue eyes (b). What is the phenotype of a person who is Bb?
a)
Blue Eyes
b)
Brown Eyes
c)
70% Brown
d)
25% Blue
5.
Brown eyes (B) are dominant to blue eyes (b). What is the genotype of a person with blue eyes?
a)
Homozygous Dominant (BB)
b)
Homozygous Recessive (bb)
c)
Heterozygous (Bb)
d)
Single Recessive (b)
6.
What is a gene?
a)
Section of DNA that codes for mutations
b)
ection of DNA that codes for the DNA sequence
c)
Section of DNA that codes for evolution
d)
Section of DNA that codes for our traits
7.
What genotype belongs in the box with the question mark?
a)
AA
b)
Aa
c)
aA
d)
aa
8.
What genotype belongs in the top right box?
a)
TT
b)
tt
c)
Tt
9.
What is the probability that the offspring will be Homozygous Recessive?
a)
0%
b)
25%
c)
50%
d)
100%
10.
What is the probability that the offspring will be yellow?
a)
100%
b)
50%
c)
25%
d)
0%
11.
What two parents could produce at least one offspring that shows the recessive trait?
a)
Aa x Aa
b)
Aa x AA
c)
AA x aa
d)
AA x AA
12.
Could two parents that show the dominant trait produce offspring with the recessive trait?
a)
Yes
b)
No
c)
Not enough information
d)
I don't know
13.
If tall (T) is dominant to short (t), which of these offspring will be short?
a)
TT
b)
Tt
c)
tt
d)
tT
14.
What is the probability that the offspring will have the dominant trait?
a)
1:4
b)
2:4
c)
3:4
d)
4:4
15.
Which word describes an organism's physical characteristics?
a)
Heterozygous
b)
Homozygous
c)
Phenotype
d)
Genotype
16.
What is the symbol for an Affected Male?
a)
Half Circle
b)
Half Square
c)
Full Shaded Circle
d)
Full Shaded Square
17.
How many affected females are present?
a)
1
b)
2
c)
3
d)
4
18.
How many offsprings did generation 2 have?
a)
5
b)
8
c)
9
d)
10
19.
How are mates identified in a Pedigree?
a)
Vertical Line
b)
Horizontal Line
20.
How many Homozygous Dominant males are present?
a)
2
b)
4
c)
6
d)
8
21.
What would the genotype be for the blonde son in generation 2?
a)
BB
b)
Bb
c)
bb
d)
Not enough information
22.
How many affected females are deceased?
a)
0
b)
2
c)
4
d)
All
23.
How many carrier males are present?
a)
2
b)
4
c)
6
d)
8
24.
What does the symbol located at Generation II - 3 represent?
a)
Dominant Female
b)
Recessive Female
c)
Carrier Female
d)
Mitosis Female
25.
How many children in generation III are homozygous dominant?
a)
1
b)
2
c)
3
d)
4
26.
Which generation connects these two pedigrees?
a)
1
b)
2
c)
3
27.
A carrier is represented by what symbol?
a)
Clear
b)
Shaded
c)
Half Shaded
d)
1:4 ratio
28.
Offsprings are represented by....
a)
Horizontal Line
b)
Vertical Line
29.
If the affected female in generation 3 mates with an affected male. What will be their offspring's genotype?
a)
100% Hybrid/Pure
b)
100% Homozygous Dominant
c)
100% Homozygous Recessive
d)
100% Heterozygous
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