wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Genetics Exam

Total questions: 40

Worksheet time: 34mins

Name
Class
Date
1.
Heterozygous is when...
a)

the alleles are the same

b)

the alleles are different

c)

the alleles are absent

d)

the alleles are present

2.
B = brown fur  b = white fur
In the punnett square, what is the probability for white fur? 
a)
0%
b)
25%
c)
50%
d)
75%
3.

What are the possible phenotype(s) 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

4.
What is the yellow seed genotype?
a)
aa
b)
Aa
c)
AA
d)
AA or Aa
5.
An offspring will receive how many alleles from each parent to determine a specific trait?
a)
one
b)
two
c)
three
d)
five
6.
B = brown eyes
b = blue eyes
What is true about these two brothers that have brown eyes?
One has genotype BB the other Bb.
a)

they have same phenotype and genotype

b)

they have different genotypes and phenotypes

c)

they have same phenotype but different genotypes

d)

they have same genotype but different phenotypes

7.
In rabbits, black fur (B) is dominant over brown fur (b). If a rabbit has brown fur, what can you conclude about its genotype?
a)

It is BB.

b)

It is Bb

c)

It is brown

d)

It is bb.

8.
Gregor Mendel is often called ....
a)

The father of heredity.

b)

The father of genetics.

c)

The king of peas

d)

The father of punnett squares.

9.
It is NOT possible for two purebred black rabbits (both BB) to produce white offspring.
a)
True
b)
False
10.
What is the phenotype of a creature with LL?
a)
Squarepants
b)
Roundpants
c)
Long Nose
d)
Stubby Nose
11.
What is the phenotype of an individual with yy?
a)
Yellow Body
b)
Blue Body
c)
Round Eyes
d)
Oval Eyes
12.
What is the phenotype of an individual with Ss?
a)
Yellow Body
b)
Blue Body
c)
Square pants
d)
Round pants
13.
What is the phenotype of an individual with RR?
a)
Yellow Body
b)
Blue Body
c)
Square pants
d)
Round eyes
14.
What is the phenotype of an individual with Rr?
a)
Yellow Body
b)
Blue Body
c)
Square pants
d)
Round eyes
15.

Draw a Punnett Square. One of SpongeBob's cousins, SpongeBillyBoby, recently met a cute squarepants gal, SpongeGerdy, at a local dance and fell in love. If SpongeGerdy's father is a heterozygous squarepants and her mother is a roundpants, what is her genotype? Remember draw the Punnett square to find her Genotype

16.

From question #12, What type of fellow would SpongeBob's aunt need to marry in order to give her the best chances of having a child with a long nose? (check all that apply)

a)

homozygous dominant

b)

LL

c)

purebred dominant

d)

heterozygous

e)

ll

17.
What you see, or the physical appearance.
a)
Genotype
b)
Phenotype
c)
Homozygous
d)
Heterozygous
18.

If an organism is said to have a genotype of "aa", which of the following then best describes it?

a)

Homozygous recessive

b)

Homozygous dominant

c)

Heterozygous dominant

d)

Heterozygous recessive

19.

If round seeds (R) are dominant to wrinkled seeds, which best describes a seed that's heterozygous?

a)

rr

b)

RR

c)

Rr

d)

Wrinkled

20.

Yellow flowers (Y) are dominant to white flowers. Which best describes a white flower?

a)

YY

b)

Homozygous dominant

c)

Heterozygous recessive

d)

yy

21.

Yellow flowers (Y) are dominant to white flowers. Which best describes a genotype of "Yy"?

a)

yellow

b)

Homozygous dominant

c)

Heterozygous recessive

d)

yy

22.

Based on the Punnett Square shown, what should fill in the missing box?

a)

GG

b)

Gg

c)

gg

d)

gG

23.

Based on the Punnett Square shown, what percent of the offspring will probably be a green pea?

a)

25%

b)

50%

c)

75%

d)

100%

24.

Based on the Punnett Square shown, what should go in the missing boxes?

a)

BB

b)

Bb

c)

bb

d)

white flower

25.

Based on the Punnett Square shown, what is the probability that the child will have blue eyes?

a)

0%

b)

25%

c)

505

d)

75%

e)

100%

26.

Based on the Punnett Square shown, what should go in the missing boxes?

a)

tt

b)

Tt

c)

tT

d)

TT

27.

Based on the Punnett Square shown, what best describes the alleles of missing boxes?

a)

tt

b)

Tt

c)

Homozygous dominant

d)

Heterozygous

28.

Based on the Punnett Square shown, what should go in the missing boxes?

a)

BB

b)

Bb

c)

bb

d)

white flower

29.

Based on the Punnett Square shown, what should go in the missing boxes?

a)

tt

b)

Tt

c)

tT

d)

TT

30.

Based on the Punnett Square shown, what best describes the alleles of missing boxes?

a)

tt

b)

Tt

c)

Homozygous dominant

d)

Heterozygous

31.
What chance does the offspring have of showing a recessive trait?
a)
50%
b)
75%
c)
100%
d)
25%
32.
What is the allele combination for square 1?
a)
Dd
b)
DD
c)
dd
d)
D
33.
What is the possibility of this offspring having a dominate trait?
a)
50%
b)
75%
c)
25%
d)
0%
34.
What is the chance of this offspring having a recessive trait?
a)
25%
b)
100%
c)
50%
d)
0%
35.
What is the missing allele?
a)
a
b)
A
c)
AA
d)
aa
36.
What is the genotype for the black chickens?
a)
BB
b)
Bb
c)
bB
d)
bb
37.
What is the phenotype for Bb?
a)
Black chicken
b)
Blue Chicken
c)
Dominant
d)
Red spot
38.
If two black chickens (genotype bb) mated, would there be a chance of having Blue (Bb, BB) chickens?
a)
No chance
b)
50% chance
c)
25% chance
d)
100% chance
39.
Why are there no white rabbit babies?
a)
The white gene is not present in any of the babies.
b)
It takes two recessive genes to show the trait.
c)
Grey is a better color.
d)
Baby five will be white.
40.

A homozygous brown mouse is crossed with a heterozygous brown mouse (tan is the recessive color).


Perform a Punnett square cross and determine the phenotype & %.

a)

100% tan

b)

100% brown

c)

50% brown and 50% tan

d)

75% brown and 25% tan

Similar Resources on Wayground

Diplomat Circulatory Quiz Review

40 questions

Diplomat Circulatory Quiz Review

quiz

Worksheet

•

7th Grade

Endocrine, Excretory, and Integumentary Systems

35 questions

Endocrine, Excretory, and Integumentary Systems

quiz

Worksheet

•

7th Grade

Human Body Review

35 questions

Human Body Review

quiz

Worksheet

•

7th - 8th Grade

Grade 8 8C Review

42 questions

Grade 8 8C Review

quiz

Worksheet

•

7th - 9th Grade

Factors in an Ecosystems

43 questions

Factors in an Ecosystems

quiz

Worksheet

•

6th - 8th Grade

SOL 5.7 Earth's Changing Surface Unit Review

36 questions

SOL 5.7 Earth's Changing Surface Unit Review

quiz

Worksheet

•

4th - 8th Grade

Male Reproductive System Quiz

35 questions

Male Reproductive System Quiz

quiz

Worksheet

•

6th - 12th Grade

Viruses, Bacteria, Protists, and Fungus

40 questions

Viruses, Bacteria, Protists, and Fungus

quiz

Worksheet

•

6th - 8th Grade