WorksheetsPedigree Charts Questions
Total questions: 15
Worksheet time: 10mins
Name
Class
Date
1.
In the second generation-how many people are carriers of the trait?
a)
2
b)
3
c)
5
d)
6
2.
How many individuals are there in the 3rd generation?
a)
2
b)
3
c)
4
d)
6
3.
Examine the pedigree. The allele for the presence of a widow’s peak is dominant. Therefore, we can tell from the chart that in the couple labeled 2:
a)
the male is heterozygous and the female is homozygous.
b)
the male is homozygous and the female is heterozygous.
c)
the male is homozygous and the female is homozygous.
d)
the male is heterozygous and the female is heterozygous.
4.
a)
Not affected Female
b)
Not affected Male
c)
Affected Male
d)
Affected Female
5.
a)
Not Affected Male
b)
Not Affected Female
c)
Affected Male
d)
Affected Female
6.
How are individuals III-2 and II-4 related?
a)
Cousins
b)
Dad and Daughter
c)
Uncle and Niece
d)
Grandpa and Granddaughter
7.
Give the genotype for person III-3
a)
GG
b)
Gg
c)
gg
8.
Give the genotype for person II-1
a)
GG
b)
Gg
c)
gg
9.
If this pedigree shows a recessive disorder, what MUST the genotype of individual II-3 be?
a)
HH
b)
Hh
c)
hh
d)
None of the above
10.
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.
11.
How many people in this whole pedigree have the trait/disease?
a)
2
b)
3
c)
4
d)
6
12.
Which individual in the first generation is a carrier?
a)
The male
b)
The female
c)
individual 1
d)
None of the above
13.
How many kids did the mother and father from the first generation have?
a)
2
b)
4
c)
5
d)
6
14.
The affected son and daughter in the fourth generation are
a)
homozygous dominant
b)
homozygous recessive
c)
heterozygous
d)
Can't tell
15.
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
100 %
