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Multiple alleles and polygenic traits

Total questions: 16

Worksheet time: 37mins

Name
Class
Date
1.

What is NOT a possible genotype for someone with type B blood?

a)

BB

b)

AB

c)

BO

2.
What is the genotype of a person with type A blood, who had a father with type O blood?
a)
AB
b)
AO
c)
AA
d)
OO
3.

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)

BO

b)

BB

c)

OO

d)

B

4.

The physical appearance of an organisms is its

a)

Genotype

b)

Phenotype

c)

characteristic

d)

Heterozygous

5.

The different forms of a gene are called

a)

traits

b)

pollinators

c)

alleles

d)

hybrids

6.

What type of inheritance is determined by multiple genes and there can be a range of traits?

a)

Codominance

b)

Incomplete dominance

c)

Polygenic traits

7.

A single gene has 3 or more alleles. These are called

a)

multiple genes

b)

multiple alleles

c)

codominance

d)

polygenic traits

8.

AB blood type is an example of what type of inheritance? Both alleles show in the phenotype

a)

complete dominance

b)

incomplete dominance

c)

codominance

d)

polygenic inheritance

9.
Homozygous is when...
a)
the alleles are the same
b)
the alleles are different
c)
the alleles are absent
d)
the alleles are present
10.
This is when a trait is controlled by more than one gene.
a)
Multiple alleles
b)
Polygenetic inheritance
c)
Codominance
d)
Incomplete Dominance 
11.

Examples include skin color and height (the individual's phenotype exists somewhere along a spectrum)

a)

polygenic inheritance

b)

multiple alleles

c)

linked genes

d)

incomplete dominance

12.
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%
13.
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%
14.

Write the GENOTYPE for a person who is homozygous for type B blood

(a)  

15.

If a persons genotype was AABbCc for height. How many genes do they have for this trait?

a)

6

b)

3

c)

4

d)

5

16.

For the square that has OO in the bottom right. What would be the missing allele on the top? (A ____ )

a)

A

b)

B

c)

O

d)

OO