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Genetics punnett squares

Total questions: 39

Worksheet time: 29mins

Name
Class
Date
1.
Which of the following is homozygous recessive?
a)
rr
b)
AA
c)
TT
d)
Ff
2.
Which of the following is homozygous dominant?
a)
Jj
b)
Rr
c)
MM
d)
ee
3.

The physical appearance of a trait is known as the-

a)

genotype

b)

phenotype

c)

Homozygous

d)

intelligence

4.

Gretford is heterozygous. If (R) for Round head, and (r) is for Egg head, what is Gretford's genotype?

a)

RR

b)

Rr

c)

rr

d)

rR

5.
What is the probability of heterozygous offspring?
a)
25%
b)
50%
c)
0%
d)
100%
6.
What allele combination should go in the missing box?
a)
AA
b)
Aa
c)
aa
d)
none of these
7.

What genotype would go in box 2? And is it Homozygous or Heterozygous?

a)

BB Heterozygous

b)

Bb Heterozygous

c)

bb Homozygous

d)

Bb Homozygous

8.

What are the possible genotypes for this cross? And what percentage of each is produced?

a)

TT = 25% Tt= 50% tt=25%

b)

all tall

c)

75% tall; 25% short

d)

Tt = 100%

9.
Which of the following genotypes is heterozygous?
a)
Bb
b)
BB
c)
bb
d)
B
10.
What you see, or the physical appearance.
a)
Genotype
b)
Phenotype
c)
Homozygous
d)
Heterozygous
11.

How many alleles does an individual normally have for each trait?

a)

1

b)

2

c)

3

d)

4

12.
This is an example of ___________?
a)
Incomplete dominance
b)
Co-Dominance
13.
This is an example of ___________.
a)
 Incomplete Dominance
b)
 Codominance
14.
Aa, DD, bB, yy are all examples of
a)
genotypes
b)
phenotypes
15.
In a heterozygous genotype, the ___________ allele takes over in the phenotype.
a)
recessive
b)
dominant
c)
lower case letter
d)
both 
16.
What is the phenotype of the offspring? (A-Brown hair; a-blond hair) 
a)
50 % Brown Hair and 50% Blond Hair 
b)
25 % Brown Hair and 75% Blond Hair 
c)
75 % Brown Hair and 25% Blond Hair 
d)
0% Brown Hair and 100% Blond Hair 
17.
What is the dominant trait?
a)
yellow pea seeds
b)
green pea seeds
c)
there is no dominant seed
d)
Jolly green giant
18.

Cows can can be red, spotted red and white or white. What is the % chance that an offspring will be spotted if you cross a white cow with a spotted cow?

a)

0%

b)

25&

c)

50%

d)

75%

e)

100%

19.
Dominant alleles are represented by a:
a)
Male gene
b)
lowercase letter
c)
recessive trait
d)
capital letter
20.
What gamete possibilities could come from this parent's genotype?
a)
AB, AB, aB, aB
b)
Ab, AB, Ab, ab
c)
Ab, Ab, Ab, Ab
d)
AB, aB, ab, aB
21.

What goes in box 3

a)

Aabb

b)

AABB

c)

AAbb

d)

aaBb

22.
Based off this punnett square, what fraction of the offspring will have wrinkled, yellow seeds?
a)
9/16
b)
3/16
c)
1/16
d)
16/16
23.
How many generations are shown in this pedigree?
a)
1
b)
2
c)
3
d)
4
24.
How many kids did the mother and father from the first generation have?
a)
2
b)
4
c)
5
d)
6
25.

The different forms of a gene are called

a)

traits

b)

pollinators

c)

alleles

d)

hybrids

26.

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

a)

polygenic inheritance

b)

multiple alleles

c)

linked genes

d)

incomplete dominance

27.
An example of polygenic inheritance is...
a)
Skin Color
b)
hitch hikers thumb
c)
blood types
28.

Name the proteins on the surface of red blood cells.

a)

Antibodies

b)

Antigens

c)

Plasma

d)

Collagen

29.

What type of antigens can be found on the surface of red blood cells when someone has blood type O?

a)

A

b)

B

c)

AB

d)

none

30.

What type of antigens can be found on the surface of RBC's when someone has blood type AB?

a)

A

b)

B

c)

AB

d)

none

31.
What type of blood is the universal donor?
a)
O
b)
AB
c)

A

d)

B

32.

___________ is when both the dominant trait and recessive trait are seen in the phenotype.

a)

Codominance

b)

Punnett squares

c)

Complete dominance

d)

Incomplete dominance

33.
Which blood type is the universal recipient?
a)

AB

b)

A

c)

O

d)

B

34.

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

35.

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 red eyes

b)

female with red eyes

c)

male with white eyes

d)

female with white eyes

36.

a photograph or picture of chromosomes grouped in ordered pairs is a ______________

a)

pedigree

b)

Punnett Square

c)

Venn Diagram

d)

Karyotype

37.
Which sex chromosomes would indicate a typical human male?
a)
XX
b)
X
c)
XY
d)
XXY
38.

You are viewing a patients karyotype. You see 23 chromosomes total. There are no homologous chromosomes. Which type of cell are you viewing?

a)

Egg cell

b)

Zygote

c)

Skin cell

d)

White blood cell

39.
What is the gender of the individual whose karyotype is seen in the image?
a)
Male
b)
Female

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