WorksheetsPedigree the other family tree
Total questions: 20
Worksheet time: 12mins
Name
Class
Date
1.
How many generations are shown in this pedigree?
a)
1
b)
2
c)
3
d)
4
2.
Which individual in the first generation is a carrier?
a)
The male
b)
The female
c)
individual 1
d)
None of the above
3.
How many kids did the mother and father from the first generation have?
a)
2
b)
4
c)
5
d)
6
4.
How many boys did the mother and father from the first generation have?
a)
2
b)
4
c)
5
d)
6
5.
How many girls did the mother and father from the first generation have?
a)
2
b)
4
c)
5
d)
6
6.
In the second generation-how many people have the disease or display the physical trait?
a)
2
b)
4
c)
5
d)
6
7.
In the second generation-how many people are carriers of the trait?
a)
2
b)
3
c)
5
d)
6
8.
How many individuals are there in the 3rd generation?
a)
2
b)
3
c)
4
d)
6
9.
How many people in this whole pedigree have the trait/disease?
a)
2
b)
3
c)
4
d)
6
10.
Freckles (F) are dominant over nonfreckles. What is the phenotype of individual #3
a)
Ff
b)
ff
c)
freckles
d)
nonfreckles
11.
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.
12.
Black hair is dominant to blonde hair which is recessive.
What is the phenotype for the following genotype?
BB
What is the phenotype for the following genotype?
BB
a)
Blonde hair
b)
black hair
c)
brown hair
13.
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
14.
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
15.
Lisa has two grandmothers in this picture.
a)
Mona and Jackie
b)
Marge and Mona
c)
Selma and Jackie
d)
Patty and Selma
16.
How many girls in this family express this recessive disorder?
a)
4
b)
5
c)
6
d)
7
17.
What is the genotype of both great-grandsons? (Individuals 13 and 16)
a)
AA
b)
Aa
c)
A_
d)
aa
18.
What is the genotype of the great-grandfather? (Individual 2)
a)
A_
b)
aa
c)
Aa
d)
AA
19.
What is the purpose of using a pedigree?
a)
To determine the average age of a family
b)
To find out family histories and medical records
c)
To find out whether a couple can have a boy or a girl
d)
To trace the inheritance of a certain trait through generations
20.
What percentage of the female offspring will be a carrier for this recessive disease?
a)
0%
b)
50%
c)
100%
d)
25%
100 %
