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Worksheetspedigrees
Total questions: 25
Worksheet time: 18mins
Name
Class
Date
1.
Which individual in the first generation is a carrier?
a)
The male
b)
The female
c)
individual 1
d)
None of the above
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.
In a pedigree, what shape represents a male?
a)
circle
b)
square
c)
triangle
d)
diamond
5.
Lisa has two grandmothers in this picture.
a)
Mona and Jackie
b)
Marge and Mona
c)
Selma and Jackie
d)
Patty and Selma
6.
Hemophilia is a recessive sex-linked trait. If H = normal & h = has hemophilia, which genotype represents a male with hemophilia.
a)
XHY
b)
XHXh
c)
XhXh
d)
XhY
7.
How many children did I-3 and I-4 have?
a)
2
b)
3
c)
4
d)
5
8.
Imagine the shaded individuals are those WITH a "hitchhikers thumb." What must be the genotype of individual II-1?
a)
TT
b)
tt
c)
Tt
d)
Impossible to tell
9.
What is the gender of the individual whose karyotype is seen in the image?
a)
Male
b)
Female
10.
Is this trait (the shaded individuals) dominant or recessive?
a)
dominant
b)
recessive
11.
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
12.
Why do all the daughters in Generation II carry the colorblind gene?
a)
Because mom passed on the gene.
b)
Because dad passed on the X chromosome.
c)
Because their brother has it.
d)
Because their brother gave it to them.
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 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
15.
What you see, or the physical appearance.
a)
Genotype
b)
Phenotype
c)
Homozygous
d)
Heterozygous
16.
How many alleles (letters) do each person carry for a trait?
a)
1
b)
2
c)
3
d)
4
17.
AA and Aa always show up as
a)
dominant
b)
recessive
18.
aa always shows up as
a)
dominant
b)
recessive
19.
Aa is
a)
homozygous
b)
heterozygous
20.
In the second generation-how many people are carriers of the trait?
a)
2
b)
3
c)
5
d)
6
21.
Freckles (F) are dominant over nonfreckles. What is the phenotype of individual #3
a)
Ff
b)
ff
c)
freckles
d)
nonfreckles
22.
In certain species of plants, purple flowers (P) are dominant to white flowers (p). If two heterozygous plants are crossed, what will be the phenotype of the offspring?
a)
100% purple flowers
b)
100% white flowers
c)
75% white flowers, 25% purple flowers
d)
25% white flowers, 75% purple flowers
23.
How are individuals III-2 and II-4 related?
a)
Cousins
b)
Dad and Daughter
c)
Uncle and Niece
d)
Grandpa and Granddaughter
24.
What percentage of the female offspring will be a carrier for this recessive disease?
a)
0%
b)
50%
c)
100%
d)
25%
25.
What percentage of the offspring will have this recessive disease?
a)
0%
b)
25%
c)
50%
d)
75%
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