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WorksheetsForms of Inheritance 3
Total questions: 10
Worksheet time: 15mins
Name
Class
Date
1.
How are incomplete dominance and codominance different than a normal Mendelian cross?
a)
There is no difference
b)
The heterozygous genotype has a unique phenotype
c)
There is no heterozygous genotype
d)
There is only one phenotype regardless of genotype.
2.
In chickens, feather color is codominant. If a black chicken BB is mated with one that is black and white (BW), what is the probability of having a chicken that is black and white?
a)
1/4
b)
1/2
c)
3/4
d)
100%
3.
Hitchhiker’s thumb (H) is dominant to no hitchhiker’s thumb (h). A woman who does not have hitchhiker’s thumb marries a man who is heterozygous for hitchhiker’s thumb. What is the probable genotypic ratio of their children?
a)
0% Hh : 100% hh
b)
50% Hh : 50% hh
c)
25% Hh : 75% hh
d)
100% Hh : 0% hh
4.
Hemophilia is a sex-linked recessive trait found on the X chromosome. Complete a cross between a woman who is a carrier and a man who is normal.
What are the chances, if they have a daughter, that she is a carrier?
What are the chances, if they have a daughter, that she is a carrier?
a)
100%
b)
75%
c)
50%
d)
25%
5.
If a male has an affected x chromosome for a sex-linked trait such as colorblindness, where did he get the chromosome from?
a)
His father
b)
His mother
6.
When would a female have a 100% chance of inheriting a sex-linked trait?
a)
She inherits an affected X chromosome, but only from her mother
b)
She inherits an affected X chromosome from both mother and father.
c)
Mother and father both pass on recessive alleles on somatic chromosomes.
d)
Mother and father both pass on dominant alleles on somatic chromosomes.
7.
If a colorblind male marries a woman who is a carrier, what percentage of their FEMALE children will be colorblind?
a)
0%
b)
25%
c)
50%
d)
100%
8.
If two people with Type AB blood have a child, what possible blood type could their child have?
a)
Type A, Type B, or Type O
b)
Type A, Type B, or Type AB
c)
Type A or Type B
d)
Type AB only
9.
Which set of parents can most likely produce a child with type O blood?
a)
one parent with homozygous type A blood, and the other parent with homozygous type B blood
b)
one parent with heterozygous type A blood, and the other parent with type O blood
c)
one parent with type AB blood, and the other parent with type O blood
d)
A one parent with type AB blood, and the other parent with type A blood
10.
A parent with Type A blood and a parent with Type O blood have a child. Which of the following is a possible genotype of their offspring?
a)
IAIA
b)
IAIB
c)
IBi
d)
ii
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