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WorksheetsHeredity
Total questions: 25
Worksheet time: 29mins
Name
Class
Date
1.
How many alleles (letters) does a child get from each parent for each trait?
a)
1
b)
2
c)
3
d)
4
2.
How many alleles (letters) do each person carry for a trait?
a)
1
b)
2
c)
3
d)
4
3.
Dominant alleles are represented by a:
a)
Male gene
b)
lowercase letter
c)
recessive trait
d)
capital letter
4.
Aa, DD, bB, yy are all examples of
a)
genotypes
b)
phenotypes
5.
In a heterozygous genotype, the ___________ allele takes over in the phenotype.
a)
recessive
b)
dominant
c)
lower case letter
d)
both
6.
What you see, or the physical appearance.
a)
Genotype
b)
Phenotype
c)
Homozygous
d)
Heterozygous
7.
T - tall and t = short
In the punnett square below, what belongs in the missing square
In the punnett square below, what belongs in the missing square
a)
tt
b)
Tt
c)
Bb
d)
TT
8.
B = brown eyes
b = blue eyes
What is true about these two brothers that have brown eyes?
One has genotype BB the other Bb.
b = blue eyes
What is true about these two brothers that have brown eyes?
One has genotype BB the other Bb.
a)
they have same phenotype and genotype
b)
they have different genotypes and phenotypes
c)
they have same phenotype but different genotypes
d)
they have same genotype but different phenotypes
9.
Aa is
a)
homozygous
b)
heterozygous
10.
Which of the following is a phenotype?
a)
Aa
b)
red hair
c)
heterozygous
d)
DNA
11.
Which of the following genotypes is homozygous dominant?
a)
A
b)
Aa
c)
AA
d)
aa
12.
Which of the following genotypes is heterozygous?
a)
Bb
b)
BB
c)
bb
d)
B
13.
Which of the following is homozygous recessive?
a)
Tt
b)
tt
c)
TT
d)
T
14.
Destiny has blood type B, what antigen is present?
a)
None
b)
A
c)
B
d)
A and B
15.
If two parents have type AB blood, what is the probability that their child will have type O blood?
a)
0%
b)
25%
c)
50%
d)
100%
16.
If a father is AA and a mother is AB, what is the probability for a child with AB blood?
a)
0%
b)
25%
c)
50%
d)
75%
17.
A woman has type B blood and her husband has type O blood. What must be the woman's genotype, if they have a child with type O blood?
a)
IB i
b)
IB IB
c)
ii
d)
type B blood
18.
If a red blood cell has no antigens on its surface, what is its blood type?
a)
A
b)
B
c)
AB
d)
O
19.
If two parents are heterozygous for type A blood, what is the probability that their offspring would have type O blood?
a)
100 %
b)
75%
c)
50%
d)
25%
20.
What type of blood is the universal donor?
a)
O
b)
AB
21.
In a Punnett Square, 1 box is equal to 25%. How much are 3 boxes equal to?
a)
25%
b)
50%
c)
75%
d)
100%
22.
Fill in the Yellow Box
a)
AA
b)
Aa
c)
aa
23.
Fill in the Yellow Box
a)
Bb
b)
BB
c)
bb
24.
How chance the offspring born from this cross will have a homozygous dominant genotype?
a)
25%
b)
50%
c)
75%
d)
100%
25.
What is the mother's genotype?
a)
DD
b)
Dd
c)
dd
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