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Genes

Total questions: 25

Worksheet time: 15mins

Name
Class
Date
1.
The physical appearance of a trait is known as the-
a)
genotype
b)
phenotype
c)
characteristics
d)
intelligence
2.
The two-letter code that describes the genetic traits of an organism is called a-
a)
Phenotype
b)
Genotype
c)
Physical Appearance
d)
Intelligence
3.
What does the prefix homo- in homozygous mean?
a)
same
b)
different
c)
dating
d)
humans
4.
Which of the following is homozygous recessive?
a)
rr
b)
AA
c)
TT
d)
Ff
5.
What does the prefix hetero- in heterozygous mean?
a)
same
b)
different
c)
dating
d)
human
6.

Which of the following is heterozygous?

a)

FF

b)

tt

c)

Gg

d)

RR

7.
Which of the following is homozygous dominant?
a)
Jj
b)
Rr
c)
MM
d)
ee
8.

Describe this genotype: AA

a)

Homozygous

b)

Heterozygous

9.

Describe this genotype: Aa

a)

Homozygous

b)

Heterozygous

10.

What is the genotype of a female who is heterozygous for eye color?

a)

EE

b)

Ee

c)

ee

11.

What is the genotype of a female who is homozygous dominant for dimples?

a)

DD

b)

Dd

c)

dd

12.

What is the genotype of a male who is homozygous recessive for hair color?

a)

BB

b)

Bb

c)

bb

13.

What is the genotype of a male who is heterozygous for tongue rolling?

a)

RR

b)

Rr

c)

rr

14.

What is the genotype of a female who is homozygous recessive for eye color?

a)

EE

b)

Ee

c)

ee

15.

What is the genotype of a male who is heterozygous for dimples?

a)

DD

b)

Dd

c)

dd

16.

What is the genotype of a female who is homozygous dominant for handedness?

a)

HH

b)

Hh

c)

hh

17.

What is the genotype of a female who is homozygous recessive for handedness?

a)

HH

b)

Hh

c)

hh

18.

What is the genotype of a male who is heterozygous for freckles?

a)

FF

b)

Ff

c)

ff

19.

What is the genotype of a female who is homozygous dominant for hair color?

a)

BB

b)

Bb

c)

bb

20.

If a person has the genotype Hh, what trait are they heterozygous for?

a)

Handedness

b)

Hair color

c)

Height

21.

RULE: Round seeds are dominant to wrinkled seeds. The genotype RR codes for the phenotype _____.

a)

Round

b)

Wrinkled

22.
Mark is heterozygous. If B is for brown hair, and b is for blonde hair, what is Mark's phenotype?
a)
Brown Hair
b)
Blonde Hair
c)
Brown and Blonde Hair
d)
Black Hair
23.
Mary is heterozygous. If F for freckles, and f is for no freckles, what is Mary's genotype?
a)
FF
b)
Ff
c)
ff
d)
fF
24.

RULE: Round seeds are dominant to wrinkled seeds. The genotype rr codes for the phenotype _____.

a)

Round

b)

Wrinkled

25.
Mark is heterozygous. If B is for brown hair, and b is for blonde hair, what is Mark's genotype?
a)
BB
b)
bb
c)
Bb
d)
bB

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