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Worksheets

Genetics

Total questions: 26

Worksheet time: 29mins

Name
Class
Date
1.
What is the probability of heterozygous offspring?
a)
25%
b)
50%
c)
0%
d)
100%
2.
What allele combination should go in the missing box?
a)
AA
b)
Aa
c)
aa
d)
none of these
3.
Which of the following is homozygous recessive?
a)
Tt
b)
tt
c)
TT
d)
T
4.

A ____ is a region of DNA that controls a trait.

a)

gene

b)

phenotype

c)

chromatin

d)

genotype

5.

Which genotypes are homozygous?

a)

EE

b)

tt

c)

Rr

d)

Both EE and tt

6.

The ____ is the physical appearance of an organism.

a)

genotype

b)

phenotype

7.
What does DNA stand for?
a)
Deoxyribonucleic acid
b)
Denitrogenous acid
c)
Deribonucleic acid
d)
Diribonucleic acid
8.
Guanine bonds with ______________.
a)
Adenine
b)
Guanine
c)
Cytosine
d)
Thymine
9.

A homozygous dominant woman marries a man with freckles. What are the chances of a freckled baby?

a)

0%

b)

25%

c)

50%

d)

75%

e)

100%

10.

A heterozygous woman marries a heterozygous man. What is the chance of having a brown eye baby?

a)

0%

b)

25%

c)

50%

d)

75%

e)

100%

11.

A blonde woman marries a heterozygous man. What are the chances of a blonde hair baby?

a)

0%

b)

25%

c)

50%

d)

75%

e)

100%

12.
Which of the following is an example of phenotype?
a)
bb
b)
blue eyes
13.
Which of the following genotypes are purebred?
a)
Pf
b)
Pp
c)
PP
d)
pP
14.

A chart that shows all the possible combinations of alleles that can result from a genetic cross

a)

dominant allele

b)

codominance

c)

probability

d)

Punnett Square

15.
Georgette wants to breed her pet phoenixes, but she isn't sure if the babies will burst into blue flames or red flames. Her documents show that her female phoenix is homozygous dominant for red flames, while her male phoenix is homozygous recessive for blue flames. What color flames will the babies have?
a)
Red
b)
Blue
c)
Purple
d)
50% Red, 50% Blue
16.
Bob the abominable snowman lives in the snowy Andes mountains. He has white fur, which blends in nicely. He is therefore dismayed when his mate keeps having red-furred babies. What is Bob's likely genotype?
a)
Homozygous Dominant
b)
Heterozygous
c)
Homozygous Recessive
17.
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%
18.

Fill in the Yellow Box

a)

AA

b)

Aa

c)

aa

19.

Fill in the Yellow Box

a)

Bb

b)

BB

c)

bb

20.

The punnett square is used to tell the color of a frogs skin. "G" means green skin and "g" means brown skin. What is the chance the baby frogs will have Green skin?

a)

0%

b)

25%

c)

50%

d)

100%

21.

What is the mother's genotype?

a)

DD

b)

Dd

c)

dd

22.

Select ALL examples of heterozygous alleles below.

a)

Bb

b)

AA

c)

Rr

d)

nn

e)

pp

23.

Select ALL examples of homozygous alleles below.

a)

Bb

b)

AA

c)

Rr

d)

nn

e)

pp

24.
What genotype would go in box 1?
a)
BB
b)
Bb
c)
bb
25.

Who is considered the father of genetics?

a)

Gregory Peck

b)

Marshal Mendel

c)

Gregor Mendel

d)

Gregor Marshal

26.

Select all the responses that are true about Gregor Mendel

a)

He lived in a monastary

b)

Studied Pea Plants

c)

He won the nobel prize for his research

d)

No one understood his ideas on genetics until after he died.