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Inheritance

Total questions: 50

Worksheet time: 42mins

Name
Class
Date
1.

What is the definition of the phenotype?

a)

The physical traits of an organism

b)

The genetic makeup of an organism

c)

The letters eg, Aa

d)

How the genotype is expressed.

2.

Which answer includes the dominant homozygous genotype?

a)

AA

b)

Aa

c)

aa

3.

Which answer contains the heterozygous genotype?

a)

AA

b)

aa

c)

Aa

4.

What is the definition of an allele?

a)

An allele is a variety of a gene.

b)

An allele is the genetic makeup of an organism

c)

An allele is another word for a gene.

5.
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
6.
What is the definition of Homozygous?
a)
When one allele is dominant and one is recessive
b)
When an individual has two sets of the same allele.
c)
when it is neither dominant or recessive
7.

What is the definition of a genotype?

a)

The genetic makeup of an organism

b)

The physical traits of an organism.

c)

When one allele is dominant and one allele is recessive.

d)

When both alleles are dominant.

8.

What is the definition of heterozygous?

a)

When both alleles are dominant

b)

When one allele is dominant and one is recessive.

c)

When both alleles are recessive.

d)

When one gene is dominant and one is recessive.

9.

Who was the father of genetics

a)

Albert Einstein

b)

Issac Newton

c)

Gregor Mendel

d)

Robert Hooke

10.
The passing of characters from parents to offspring is called?
a)
Monohybrid cross
b)
Heredity
c)
True breeding
d)
Genetics
11.

How much of your DNA do you inherit from your mom?

a)

100%

b)

25%

c)

50%

d)

it varies

12.
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%
13.

Sperms can have

a)

Only X chromosome

b)

Only Y chromosome

c)

Either X or Y chromosome

d)

Either XX or XY chromosomes

14.

Ova (eggs) can have

a)

Only X chromosome

b)

Only Y chromosome

c)

Either X or Y chromosome

d)

Only XX chromosomes

15.

A dominant trait expresses itself

a)

only in homozygous genotypes

b)

only in heterozygous genotypes

c)

both in homozygous and heterozygous genotypes

16.

A recessive trait expresses itself

a)

only in homozygous genotypes

b)

only in heterozygous genotypes

c)

in both homozygous and heterozygous genotypes

17.

Each organism has 2 alleles for a particular trait. Where do these two alleles come from?

a)

One from each parent

b)

Both from one parent

c)

Alleles do not come from parents

d)

The kidney

18.

Which is NOT an example of a genotype?

a)

YY

b)

Yy

c)

Y

d)

yy

19.

How many pairs of chromosomes does each person have?

a)

46

b)

23

c)

2

d)

1,046,023

20.

What is it called when a gene carries two different types of alleles?

a)

Homozygous

b)

Heterozygous

c)

Monozygous

d)

Trizygous

21.

What is it called when a gene carries two of the same alleles?

a)

Homozygous

b)

Heterozygous

c)

Monozygous

d)

Mamazygous

22.

Brown eye color is dominant. Blue eye color is recessive. Select the person that is a purebred for blue eyes.

a)

AA

b)

Aa

c)

aA

d)

aa

23.
blood types consist of 4 different alleles.
a)
false
b)
true
24.
incomplete dominance means that there traits are,,,
a)
expressed equally
b)
dominant
c)
recessive
d)
blended
25.
polygenic means that _________ control a characteristic
a)
many genes
b)
single genes
c)
3 genes
d)
no genes
26.
What is NOT a possible genotype for someone with type B blood?
a)
BB
b)
AB
c)
BO
27.
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
28.
What are the blood types of the possible children that a woman (type O) and man (type AB) can have?
a)
O and AB
b)
O and A
c)
O and B
d)
A and B
29.
What is the phenotype of a person with the genotype AO?
a)
type A
b)
type O
c)
AA
d)
OO
30.
What do you call the non-Mendelian inheritance pattern where both traits are dominant and both appear in the organism with heterozygous genotype?
a)
Codominance
b)
Incomplete dominance
c)
Polygenic traits
31.
What pattern of inheritance is shown in this image?
a)
Codominance
b)
Incomplete dominance
c)
Polygenic traits
32.
A man with type O blood is accused of being the father of a type B baby. The mother is type A. Could this man be the father? 
a)
Yes 
b)
No
33.
What blood type would an individual have if this was one of the cells seen under a microscope?
a)
Type A
b)
Type B
c)
Type AB
d)
Type O
34.
Which term(s) best describes the inheritance of human blood types? 
a)
incomplete dominance and multiple alleles
b)
codominance and epistasis
c)
codominance and multiple alleles
d)
incomplete dominance and codominance
35.

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

a)

IBIB

b)

IAIB

c)

IBi

36.

What is the phenotype of a person with the genotype IBi?

a)

type A

b)

type O

c)

type B

d)

type AB

37.
What gender has an X and a Y chromosome?
a)
male
b)
female
c)
transgender 
d)
all of the above
38.

Coat color in a dog breed is determined by incomplete dominance where three colors are produced (Brown, tan and white), and the brown coat allele (B) has incomplete dominance over the white coat allele (b). Which offspring ratio would be expected from a cross between a brown dog and a white dog?

a)

A. 2 BB: 2 Bb

b)

B. 4 Bb

c)

C. 1 BB: 2 Bb: 1 bb

d)

D. 2 BB: 2 bb

39.

A cross between a red flower and a white flower produces red and white spotted flowers. Which type of inheritance pattern is indicated by these results?

a)

A. polygenic

b)

B. codominance

c)

C. multiple alleles

d)

D. incomplete dominance

40.

Human blood type is determined by multiple alleles (A, B, and O). Which ratio would result from a cross between a man with Type AB blood and a woman with Type O blood?

a)

A. 50% Type A, 50% Type O

b)

B. 75% Type A, 25% Type B

c)

C. 50% Type A, 50% Type B

d)

D. 100% Type O

41.
Colorblindness is a sex-linked recessive disorder. A normal woman whose father was colorblind marries a man with normal color vision. What percentage of their sons will be colorblind?
a)
0%
b)
25%
c)
50%
d)
100%
42.
Colorblindness is a sex-linked recessive disorder. If the daughter of a couple is colorblind, what are the two possible genotypes of her mother?
a)
XAXA and XAXa
b)
XAXA and XaXa
c)
XAXa and XaXa
d)
Cannot be determined
43.
If a trait shows up more commonly in men than women it is probably
a)
not inherited
b)
on the x chromosome and dominant
c)
on the x chromosome and recessive
d)
on a normal body chromosome
44.
Which of the following is NOT a sex-linked trait?
a)
Color-blindness
b)
Muscular Dystrophy
c)
Huntington disease
d)
Hemophilia
45.
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
46.
Hemophilia is a recessive x-linked disorder.
Which genotype represents a male with hemophilia?
a)
XHXh
b)
XhXh
c)
XHY
d)
XhY
47.
Colorblindness is a recessive x-linked disorder.
Which genotype represents a male with normal vision?
a)
XNXN
b)
XnXn
c)
XNY
d)
XnY
48.
Which of the following genotypes belongs in the red box in the Punnett square?
a)
XBXb
b)
XbXb
c)
XbY
d)
XBY
49.

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

50.
An example of polygenic inheritance is...
a)
Skin Color
b)
hitch hikers thumb
c)
blood types

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