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Total questions: 20
Worksheet time: 5hrs 0mins
Name
Class
Date
1.
How many generations are shown in this pedigree?
a)
1
b)
2
c)
3
d)
4
2.
How many kids did the mother and father from the first generation have?
a)
2
b)
4
c)
5
d)
6
3.
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.
4.
What does an open circle represent?
a)
Not Affected Male
b)
Not Affected Female
c)
Affected Male
d)
Affected Female
5.
In the second generation-how many people are carriers of the trait?
a)
2
b)
3
c)
5
d)
6
6.
How many people in this whole pedigree have the trait/disease?
a)
2
b)
3
c)
4
d)
6
7.
How many females are in this pedigree?
a)
3
b)
4
c)
6
d)
7
8.
Which individual in the first generation is a carrier?
a)
The male
b)
The female
c)
individual 1
d)
None of the above
9.
How many people in the pedigree are carriers for the disorder?
a)
6
b)
8
c)
2
d)
9
10.
How many affected females are deceased?
a)
0
b)
2
c)
4
d)
All
11.
A carrier is represented by what symbol?
a)
Clear
b)
Shaded
c)
Half Shaded
d)
1:4 ratio
12.
If a trait SKIPS a generation, it is an indication that the trait is....
a)
dominant
b)
recessive
c)
incompletely dominant
d)
co-dominant
13.
Objective #13
This is a pedigree that follows blue eyes which is a recessive trait. What is the phenotype of the mother (circle) in generation 1?
a)
Brown
b)
Blue
c)
1 blue, 1 brown
14.
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
15.
In this pedigree, which gender can be carriers of colorblindness and not have it?
a)
Just males
b)
Just females
c)
Both genders
16.
If a trait SKIPS a generation, it is an indication that the trait is....
a)
dominant
b)
recessive
c)
incompletely dominant
d)
co-dominant
17.
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
18.
Objective #13
This is a pedigree that follows blue eyes which is a recessive trait. What is the genotype of the father (square) in generation 1?
a)
Aa
b)
AA
c)
aa
d)
A?
19.
Individuals that are shaded in have premature hair whitening. Is this trait dominant or recessive? How do you know?
a)
Dominant because it skips generations
b)
Dominant because it is present in every generation
c)
Recessive because it skips generations
d)
Recessive because it is present in every generation.
20.
How are individuals III-2 and II-4 related?
a)
Cousins
b)
Dad and Daughter
c)
Uncle and Niece
d)
Grandpa and Granddaughter
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