Free Printable Genotype and Phenotype Quiz

1.

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

2.

Aa, DD, bB, yy are all examples of

a)

genotypes

b)

phenotypes

3.

An example of a homozygous dominant gene is

a)

Dd

b)

DD

c)

dd

d)

DAB

4.

An example of a homozygous recessive gene is

a)

Dd

b)

DD

c)

dd

d)

DAB

5.

TT is

a)

heterozygous

b)

homozygous

6.

Ff is

a)

heterozygous

b)

homozygous

7.

Brown eyes are dominant to blue eyes.

Bb gives you what phenotype:

(a)

8.

If polydactyly (born with extra toes/fingers) is a dominant trait in cats, then which of the following genotype(s) would produce a cat with extra toes? (Select all that apply.)

a)

TT

b)

Tt

c)

tt

9.

If the ability to taste PTC paper is dominant to not being able to taste PTC paper, which genotype(s) would result in a person NOT able to taste the paper? (Select all that apply.)

a)

TT

b)

Tt

c)

tt

10.

Dark-colored hair is dominant to light-colored hair. If Eugene has brown hair, which genotype(s) could he have? (Select all that apply.)

a)

HH

b)

Hh

c)

hh

11.

Having freckles is dominant to not having freckles. June does NOT have any freckles. Which genotype(s) could she have? (Select all that apply.)

a)

FF

b)

Ff

c)

ff

12.

PP

a)

Homozygous Dominant

b)

Heterozygous

c)

Homozygous Recessive

13.

Hh

a)

Heterozygous Dominant

b)

Homozygous Recessive

c)

Heterozygous

14.

aa

a)

Heterozygous

b)

Homozygous Dominant

c)

Homozygous Recessive

d)

Heterozygous Recessive

15.

BB

a)

dominant

b)

recessive

16.

Mm

a)

dominant

b)

recessive

17.

dd

a)

recessive

b)

dominant

18.

Select all phenotypes in the list below.

a)

dark eyes

b)

Dd

c)

red petals

d)

DD

e)

dominant

19.

Select all genotypes listed below.

a)

RR

b)

rr

c)

Recessive

d)

widow's peak

e)

right handed

20.

Select all combinations that will create a dominant trait?

a)

Aa

b)

aa

c)

AA

d)

Pp

e)

bb

21.

Select all combinations that will produce a recessive trait.

a)

qq

b)

Ee

c)

QQ

d)

Ff

e)

ee

22.

Select all homozygous genotypes shown below.

a)

AA

b)

Aa

c)

Ts

d)

aa

e)

TT

23.

Select all heterozygous genotypes listed below.

a)

Zz

b)

Jj

c)

JJ

d)

Dd

e)

BB

24.

Purple flowers are dominant to white flowers. What phenotype will be seen with the genotype Pp?

a)

purple flowers

b)

heterozygous

c)

dominant

d)

white flowers

25.

Left handedness is recessive in humans. With a genotype of Tt, what genotype will be seen in the offspring?

a)

heterozygous

b)

left handedness

c)

right handedness

d)

recessive

26.

Floppy ears are dominant in terrier dogs. Which phenotype will be created by the genotype EE?

a)

tall ears

b)

floppy ears

c)

heterozygous

d)

dominant

27.

Which of the following genotypes is homozygous dominant?

a)

A

b)

Aa

c)

AA

d)

aa

28.

Which of the following genotypes is heterozygous?

a)

Bb

b)

BB

c)

bb

d)

B

29.

In a heterozygous genotype, the ___________ allele takes over in the phenotype.

a)

recessive

b)

dominant

c)

lower case letter

d)

both

30.

An example of a heterozygous gene is

a)

FF

b)

ff

c)

Ff

31.

An example of a homozygous recessive gene is

a)

Dd

b)

DD

c)

dd

d)

DAB

32.

An example of a homozygous dominant gene is

a)

Dd

b)

DD

c)

dd

d)

DAB

33.

Dominant alleles are represented by a:

a)

Male gene

b)

lowercase letter

c)

recessive trait

d)

capital letter

34.

Aa, DD, bB, yy are all examples of

a)

genotypes

b)

phenotypes

35.

Hair colour is an example of

a)

genotype

b)

phenotype

36.

Which of the following genotypes is homozygous recessive?

a)

Tt

b)

tt

c)

TT

d)

tT

37.

The genotype "Tt" is ___.

a)

heterozygous

b)

homozygous recessive

c)

homozygous dominant

38.

An example of a heterozygous gene is

a)

FF

b)

ff

c)

Ff

39.

An example of a homozygous recessive gene is

a)

Dd

b)

DD

c)

dd

d)

DAB

40.

Dominant alleles are represented by a:

a)

Male gene

b)

lowercase letter

c)

recessive trait

d)

capital letter

41.

homozygous dominant

a)

AA

b)

Aa

c)

aa

42.

heterozygous

a)

BB

b)

Bb

c)

bb

43.

homozygous recessive

a)

DD

b)

Dd

c)

dd

44.

homozygous dominant

a)

EE

b)

Ee

c)

ee

45.

heterozygous

a)

FF

b)

Ff

c)

ff

46.

homozygous recessive

a)

GG

b)

Gg

c)

gg

47.

homozygous dominant

a)

HH

b)

Hh

c)

hh

48.

heterozygous

a)

LL

b)

Ll

c)

ll

49.

homozygous recessive

a)

MM

b)

Mm

c)

mm

50.

homozygous dominant

a)

NN

b)

Nn

c)

nn

51.

heterozygous

a)

PP

b)

Pp

c)

pp

52.

homozygous recessive

a)

RR

b)

Rr

c)

rr

53.

dominant phenotype

a)

TT

b)

Tt

c)

tt

54.

recessive phenotype

a)

AA

b)

Aa

c)

aa

Genotype and Phenotype Quiz

Total questions: 54

Worksheet time: 48mins

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