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Inheritance Review

Total questions: 34

Worksheet time: 55mins

Name
Class
Date
1.

If a white flower is crossed with a red flower and produces a pink offspring, this would be an example of...

a)

Codominance

b)

Inverse inheritance

c)

Incomplete Dominance

d)

Sex-linked traits

2.
What percentage of the offspring will have this recessive disease?
a)
0%
b)
25%
c)
50%
d)
75%
3.
I have 2 X chromosomes. What am I?
a)
Male
b)
Female
4.
I have 1 X chromosome and 1 Y chromosome. What am I?
a)
Male
b)
Female
5.
Hemophilia is a recessive x-linked disorder.
Which genotype represents a female who is a carrier for hemophilia?
a)
XHXh
b)
XhXh
c)
XHXH
d)
XhY
6.
Males are more likely to suffer from a sex-linked disease or disorder because
a)
males are the weaker sex
b)
males have less DNA
c)
males have 1 X chromosome, so the disorder is more likely to be expressed
7.
Hemophilia is a recessive x-linked disorder.
Which genotype represents a male with hemophilia?
a)
XHXh
b)
XhXh
c)
XHY
d)
XhY
8.
What type of inheritance do two alleles have if their traits blend together? 
a)
Incomplete Dominance
b)
Co-Dominance
c)
Mendelian Inheritance
d)
Homozygous Inheritance
9.

A red flowered plant (RR) breeds with a White flowered plant (rr). The gene for petal color in these plants expresses incomplete dominance.  What percentage of the offspring will have pink (Rr) flowers?

a)

0%

b)

25%

c)

50%

d)

100%

10.
This type of inheritance pattern shows BOTH traits in possible offspring
a)
complete dominance
b)
incomplete dominance
c)
co-dominance
d)
dominant pattern
11.
This is an example of ___________?
a)
Incomplete dominance
b)
Co-Dominance
12.
Which of the following is a hybrid?
a)
BB
b)
bb
c)
Bb
13.
An individual's sex is determined by 
a)
1 of 23 chromosomes
b)
2 of 46 chromosomes
c)
4 of 92 chromosomes
14.
When we say that a woman is a carrier for a genetic disease or disorder it means that
a)
she has 1 gene, but not the disorder
b)
she has 2 genes for the disorder
c)
she can pass the gene only to male children
d)
she can pass the gene only to female children
15.

In fruit flies, eye color is a sex linked trait. Red (R) is dominant to white (r). What is the sex and eye color of flies with the following genotype: X R X r ?

a)

male with white eyes

b)

female with red eyes

c)

male with red eyes

d)

female with white eyes

16.
Which of the following genotypes is homozygous dominant?
a)
A
b)
Aa
c)
AA
d)
aa
17.
Which of the following genotypes is heterozygous?
a)
Bb
b)
BB
c)
bb
d)
B
18.

Males can be heterozygous for sex-linked traits.

a)

True

b)

False

19.

Suppose that in sheep, a dominant allele (B) produce black hair and a recessive allele (b) produce white hair. If you saw a black sheep, you would be able to identify

a)

its phenotype for hair color

b)

its genotype for hair color

c)

the genotype of only one of its parents

d)

the phenotype of both of its parents

20.
What is a dominant allele?
a)
A trait that is always shown (capital letter)
b)
A trait that can be hidden (lower case letter)
c)
Alleles that are the same
d)
Alleles that are different
21.
Which choice best represents the genotype of this cross?
a)
1 Yy: 2 yy: 0 YY
b)
2 Yy: 2 yy: 0 YY
c)
3 Yy: 1 yy: 0 YY
d)
1 Yy: 3 yy: 0 YY
22.
How many generations are shown in this pedigree?
a)
1
b)
2
c)
3
d)
4
23.
This pedigree represents the inheritance of hemophilia in this family. How many of the females have the hemophilia trait?
a)
8
b)
5
c)
2
d)
3
24.

The different forms of a gene are called

a)

traits

b)

pollinators

c)

alleles

d)

hybrids

25.
What pattern of inheritance is shown in this image?
a)
Codominance
b)
Incomplete dominance
c)
Polygenic traits
26.
A calico cat shows both the traits for orange fur and black fur. What kind of allele expression is this?
a)
Incomplete Dominance
b)
Co dominance
c)
Independent assortment
d)
Recessive inheritance
27.

Incomplete dominance occurs in cats, which allows them to be Black, White, or gray as shown on this Punnett square. What percentage of the offspring will be white?

a)

25

b)

50

c)

0

d)

100

28.
How are Incomplete Dominance and Co Dominance 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.
29.
An allele that is masked when a dominant allele is present. The "weaker" gene. 
a)
Dominant Allele
b)
Recessive Allele
30.

What trait is shown here?

a)

Heterozygous recessive

b)

Homozygous Recessive

c)

Heterozygous

d)

Homozygous Dominant

31.

What trait does this individual show?

a)

The recessive trait

b)

The dominant trait

32.

What percentage of the offspring are homozygous recessive?

a)

0%

b)

75%

c)

50%

d)

100%

33.

What is the genotype is the Dad?

a)

Heterozygous

b)

Homozygous dominant

c)

Homozygous recessive

34.
Which of the following is homozygous recessive?
a)
Tt
b)
tt
c)
TT
d)
T

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