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WorksheetsPedigree Practice
Total questions: 16
Worksheet time: 34mins
Name
Class
Date
1.
What does a filled in square represent?
a)
Not affected Female
b)
Not affected Male
c)
Affected Male
d)
Affected Female
2.
How many generations are shown in this pedigree?
a)
1
b)
2
c)
3
d)
4
3.
How many kids did the mother and father from the first generation have?
a)
2
b)
4
c)
5
d)
6
4.
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
5.
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.
6.
What does an open circle represent?
a)
Not Affected Male
b)
Not Affected Female
c)
Affected Male
d)
Affected Female
7.
Is this trait (the shaded individuals) dominant or recessive?
a)
dominant
b)
recessive
8.
How many people in this whole pedigree have the trait/disease?
a)
2
b)
3
c)
4
d)
6
9.
Which gender can be carriers of colorblindness and not have it?
a)
Just males
b)
Just females
c)
Both genders
10.
What do we use pedigrees for?
a)
To look at families
b)
To make determinations about the offspring
c)
To track traits in families
d)
Nothing
11.
What does a horizontal line between a square and a circle mean?
a)
They are siblings
b)
They are cousins
c)
They are married ("together")
d)
They are the children
12.
What does a vertical line coming down from a square and circle that are connected by horizontal line indicate?
a)
They are cousins
b)
The children
c)
Aunts and Uncles
13.
AA and Aa always show up as
a)
dominant
b)
recessive
14.
In the second generation-how many people are carriers of the trait?
a)
2
b)
3
c)
5
d)
6
15.
Is this trait (the shaded individuals) dominant or recessive?
a)
dominant
b)
recessive
16.
Look at the Punnett square. If the two parents represented in the Punnett square have four offspring, what does the Punnett square tells you?
a)
two of the offspring will definitely be heterozygous.
b)
one of the offspring will definitely show the recessive trait.
c)
there is a 50% chance for each of the 4 offspring to have the genotype Rr.
d)
there is a greater chance for the offspring to be RR than rr.
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