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Non-Mendelian Genetics

Total questions: 66

Worksheet time: 1hrs 6mins

Name
Class
Date
1.

When red snapdragons are crossed with white snapdragons, the offspring produce pink flowers. This is an example of:

a)

complete dominance

b)

incomplete dominance

c)

codominance

d)

polygenic inheritance

e)

multiple alleles

2.

When one allele is not dominant over the other, resulting in both traits expressed in a heterozygous individual.....

a)

Incomplete Dominance

b)

Codominance

3.

When one allele is not dominant over another, resulting in a blended phenotype for heterozygous offspring is considered....

a)

Incomplete Dominance

b)

Codominance

4.

Which of the following genotypes code for the blood type AB?

a)

IA IA and IA IB

b)

IA IB only

c)

IA IB and IB i

d)

ii only

5.

Which of the following are genotypes for blood type B?

a)

IA IA and IA IB

b)

IB IB and ii

c)

IB IB and IB i

d)

IA IB and IA IB

6.

This is an example of ---

a)

Incomplete dominance

b)

Codominance

7.

A condition in which both alleles for a gene are expressed so that both traits are visible is known as ---

a)

Codominance

b)

Incomplete dominance

8.

A calico cat shows both the traits for orange fur and black fur. What kind of allele expression is this?

a)

Incomplete dominance

b)

Codominance

9.

Human eye color is controlled by three different genes, and affected by a dozen more. This is an example of:

a)

complete dominance

b)

incomplete dominance

c)

codominance

d)

polygenic inheritance

e)

multiple alleles

10.

The gene for human blood type has three alleles, A, B and O. This is an example of:

a)

complete dominance

b)

incomplete dominance

c)

codominance

d)

polygenic inheritance

e)

multiple alleles

11.

Fur color in rabbits is controlled by a single gene. There are many different phenotypes. What is the best explanation for this?

a)

complete dominance

b)

incomplete dominance

c)

codominance

d)

polygenic inheritance

e)

multiple alleles

12.

People come in a wide variety of heights. What is the best explanation for this?

a)

complete dominance

b)

incomplete dominance

c)

codominance

d)

polygenic inheritance

e)

multiple alleles

13.
What is NOT a possible genotype for someone with type B blood?
a)
IBIB
b)
IAIB
c)
IB i
d)

All of these are examples of type B blood

14.

Which of the following is true about blood type O?

a)

It contains antigen A only.

b)

It contains antigen B only.

c)

It contains both antigen A and antigen B.

d)

It doesn’t contain antigen A or antigen B.

15.

Passing on traits from parents to offspring

a)

Chromosome

b)

Genotype

c)

Heredity

d)

Allele

16.
Dominant alleles are represented by a(n)
a)
phenotype
b)
lower case letter
c)
upper case letter
d)
punnett square 
17.

A genotype where only dominant alleles were passed on

from both parents for one trait

BB AA TT LL

a)

Homozygous Recessive

b)

Homozygous Dominant

c)

Dihybrid

d)

Heredity

18.

A genotype where one dominant and one recessive allele was passed on from both parents for one trait.

Bb Aa Tt Ll

a)

Allele

b)

Homozygous Dominant

c)

Homozygous Recessive

d)

Heterozygous

19.

A genotype where only recessive alleles

were passed on from both parents for one trait

bb aa tt ll

a)

Heredity

b)

Homozygous Dominant

c)

Homozygous Recessive

d)

Phenotype

20.
What do you call the physical expression of a gene?
a)
genotype
b)
dominant
c)
phenotype
d)
allele
21.
Two brown eyed parents (Bb) have a baby. What is the chance the baby is blue eyed?
a)
0 %
b)
25%
c)
50%
d)
75%
22.

In some carnations, flower color exhibits codominance. Identify the correct genotypes for red, white, and speckled carnations.

a)

Red = RR, white = rr, speckled = SS

b)

Red = RR, white = WW, speckled = SS

c)

Red = RR, white = RW, Speckled = WW

d)

Red = RR, white = WW, speckled = RW

23.
The different forms of a gene are called
a)
traits
b)
pollinators
c)
alleles
d)
hybrids
24.
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
25.

Colorblindness is a recessive X-linked disorder.

Which genotype represents a male with normal vision?

a)

XN YN

b)

Xn Yn

c)

XN Y

d)

Xn Y

26.
Which of the following genotypes belongs in the red box in the Punnett square?
a)
XBXb
b)
XbXb
c)
XbY
d)
XBY
27.

In a pedigree, which shape represents a male?

a)

circle

b)

square

28.

On a pedigree, this symbol represents a ----

a)

not affected male.

b)

not affected female.

c)

affected male.

d)

affected female.

29.

How many individuals are there in the 3rd generation?

a)

1

b)

2

c)

4

d)

6

30.

What is the mode of inheritance shown here?

a)

Recessive because it "skips" a generation

b)

Dominant because it shows up in every generation

31.

If this pedigree shows a recessive disorder, what MUST the genotype of individual 4 be?

a)

HH

b)

Hh

c)

hh

32.

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

33.

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 Y ?

a)

male with white eyes

b)

female with white eyes

c)

male with red eyes

d)

female with red eyes

34.

Colorblindness is more common in males than in females because......

a)

fathers pass the allele for colorblindness to their sons only

b)

the allele for colorblindness is located on the Y chromosome

c)

the allele for colorblindness is recessive and located on the X chromosome

d)

males who are colorblind have two copies of the allele for colorblindness

35.

The woman who is colorblind marries a man with normal vision. What is the probability that their sons will be colorblind?

a)

0%

b)

25%

c)

50%

d)

100%

36.
Hemophilia is a recessive x-linked disorder.
Which genotype represents a male with hemophilia?
a)
XHXh
b)
XhXh
c)
XHY
d)
XhY
37.
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
38.

A version of a gene is called a(n)

a)

allele

b)

characteristic

c)

specific gene

d)

trait

39.

A trait that is expressed if one copy of the allele is present is a(n)

a)

characteristic

b)

dominant trait

c)

gene

d)

recessive trait

40.

An organism’s physical expression of a trait is called a(n)

a)

dominant trait

b)

genotype

c)

phenotype

d)

recessive trait

41.

What is it called when both alleles in a genotype are the same?

a)

Dominance

b)

Heterozygous

c)

Homozygous

d)

Recessiveness

42.

What is it called when the alleles in a genotype are different?

a)

Dominance

b)

Heterozygous

c)

Homozygous

d)

Recessiveness

43.

Which pair of alleles is an example of homozygous recessive?

a)

bb

b)

BB

c)

Bb

44.

Which pair of alleles is an example of homozygous dominant?

a)

tt

b)

TT

c)

Tt

45.

Which pair of alleles is an example of heterozygous alleles?

a)

ll

b)

LL

c)

Ll

46.
Which of the following alleles is homozygous (purebred) recessive?
a)
Tt
b)
tt
c)
TT
d)
t
47.

Which of the following genotypes is homozygous dominant?

a)

A

b)

Aa

c)

AA

d)

aa

48.
An offspring will receive how many alleles from each parent to determine a specific trait?
a)
one
b)
two
c)
three
d)
five
49.
having two of the same genes for the trait (sometimes called purebred).
a)
homozygous
b)
hetrozygous
c)
protein
d)
chromosome
50.
having two different genes for a trait (sometimes called hybrid).
a)
protein
b)
homozygous
c)
heterozygous
d)
genotype
51.
Two brown eyed parents (Bb) have a baby. What is the chance the baby is blue eyed?
a)
0 %
b)
25%
c)
50%
d)
75%
52.
An allele whose trait only shows up when no dominant allele is present.
a)
hidden allele
b)
dominant allele
c)
recessive allele
d)
present allele
53.
Snapdragon flowers come in red, pink and white.  What type of inheritance is this?
a)
Complete Dominance
b)
Incomplete Dominance
c)
Codominance
d)
Polygenic Inheritance
54.
Incomplete dominance means that the traits are
a)
expressed equally
b)
dominant
c)
recessive
d)
blended
55.
Which of the following genotypes is a purebred?
a)
Bb
b)
Gg
c)
bb
d)
Dd
56.
If green is dominant over purple, then what is the genotype for this individual?
a)
Purple
b)
Green
c)
GG
d)
gg
57.
Brown fur color is dominant over black fur color. Which of the following is the actual genotype of ALL of the offspring in the next generation of this cross for fur color?
AA x aa
a)
AA
b)
Aa
c)
aa
d)
brown fur
58.
Which is the correct phenotype for this organism?
a)
BB
b)
blue
c)
green
d)
bb
59.
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
60.

Which of the following statement is correct regarding Codominance?

a)

Both alleles are expressed equally

b)

Neither allele is expressed

c)

Expression of a trait depends upon the environment

61.
Which of the following statements is true regarding blood types?
a)
A and O are codominant, B is recessive.
b)
B and O are codominant, A is recessive.
c)
A and B are codominant, O is recessive.
d)
A , B and O are all codominant with each other.
62.
In a pedigree, what shape represents a male?
a)
circle
b)
square
c)
triangle
d)
diamond
63.
Give the genotype for person III-3
a)
GG
b)
Gg
c)
gg
64.
Give the genotype for person II-1
a)
GG
b)
Gg
c)
gg
65.
 How many kids did the mother and father from the first generation have?
a)
2
b)
4
c)
5
d)
6
66.
What percentage of the female offspring will be a carrier for this recessive disease?
a)
0%
b)
50%
c)
100%
d)
25%

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