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Genotype & Phenotype Practice - Part 2

Total questions: 20

Worksheet time: 15mins

Name
Class
Date
1.

Dominant alleles are written with:

a)

Upper case letters

b)

Lower case letters

2.

Recessive alleles are written with:

a)

Upper case letters

b)

Lower case letters

3.

Dd would look

a)

Dominant

b)

Recessive

c)

None

4.

dd would look

a)

Dominant

b)

Recessive

c)

None

5.

DD would look

a)

Dominant

b)

Recessive

c)

None

6.

A segment of DNA that codes for a trait

a)

gene

b)

allele

c)

chromosome

d)

heredity

7.

A version or variation of a gene

a)

trait

b)

gene

c)

allele

d)

DNA

8.
Which of the following is heterozygous
a)
FF
b)
tt
c)
Gg
d)
RR
9.
Which of the following is homozygous recessive?
a)
rr
b)
AA
c)
TT
d)
Ff
10.
What does the prefix homo- in homozygous mean?
a)
same
b)
different
c)
dating
d)
humans
11.
What does the prefix hetero- in heterozygous mean?
a)
same
b)
different
c)
dating
d)
human
12.
Which of the following is heterozygous
a)
Ww
b)
ii
c)
DD
d)
kk
13.
Which of the following is homozygous dominant?
a)
Jj
b)
Rr
c)
MM
d)
ee
14.
How many letters does a genotype contain?
a)
1
b)
2
c)
3
d)
4
15.
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
16.
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
17.

If Purple Flowers (P) are dominant over white flowers (p), what would the phenotype be for a PP genotype?

a)

Purple flowers

b)

White flowers

c)

Not enough information

18.

If Brown eyes (B) are dominant over blue eyes (b), what would the phenotype be for a bb genotype?

a)

Brown Eyes

b)

Blue Eyes

c)

Green Eyes

19.

If pointed heads (P) are dominant to round heads (p) - what are the possible Genotype(s) for pointed heads?

a)

pp only

b)

PP only

c)

PP or Pp

20.

If pointed heads (P) are dominant to round heads (p) - what are the possible Genotype(s) for round heads?

a)

pp only

b)

PP only

c)

PP or Pp