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Dihybrid Cross Quiz

Total questions: 15

Worksheet time: 15mins

Name
Class
Date
1.
What gamete possibilities could come from this parent's genotype?
a)
AB, AB, aB, aB
b)
Ab, AB, Ab, ab
c)
Ab, Ab, Ab, Ab
d)
AB, aB, ab, aB
2.

(Grey fur (G) is dominant over white fur (g) and Black eyes (B) are dominant over red eyes(b))

A male rabbit GGbb crossed with a female rabbit with ggBb.


How many out of 16, have grey fur and black eyes?

a)

4

b)

8

c)

12

d)

16

3.

(Grey fur (G) is dominant over white fur (g) and Black eyes (B) are dominant over red eyes(b))

A male rabbit GGbb crossed with a female rabbit with ggBb.


How many out of 16, have grey fur and red eyes?

a)

4

b)

8

c)

12

d)

16

4.

(Grey fur (G) is dominant over white fur (g) and Black eyes (B) are dominant over red eyes(b))

A male rabbit GGbb crossed with a female rabbit with ggBb.


How many out of 16, have white fur and black eyes?

a)

0

b)

4

c)

8

d)

16

5.
What goes in box 1
a)
AABb
b)
AABB
c)
aabb
d)
AaBb
6.
What goes in box 3
a)
Aabb
b)
AABB
c)
AAbb
d)
aaBb
7.

How can two parents with brown eyes have a child with blue eyes?

a)

The parents may both have a recessive gene for blue eyes.

b)

The child was born during the winter

c)

Eye color in humans is not an inherited trait

d)

The child was deprived of oxygen during its birth

8.
Cross Two Homozygous plants
(
RRYY x rryy)
R = round seeds, r  = wrinkled seeds Y = yellow seeds, y = green seeds
What percent will have Round and Yellow seeds? 
a)
0%
b)
25%
c)
50%
d)
100%
9.

Based off this punnett square, what fraction of the offspring will have wrinkled, yellow seeds?

R = round seeds, r = wrinkled seeds Y = yellow seeds, y = green seeds

a)

9/16

b)

3/16

c)

1/16

d)

16/16

10.
What genotype is missing from this Punnett Square?
a)
RrYy
b)
RRYY
c)
rryy
d)
RrYY
11.
Which of the following genotypes is heterozygous?
a)
Bb
b)
BB
c)
bb
d)
B
12.
Which of the following genotypes is homozygous dominant?
a)
A
b)
Aa
c)
AA
d)
aa
13.
parent 1: GgBB
parent 2: ggBb
Find the gametes for parent 1.
a)
GB, GB, gB, gB
b)
gB, gb, gB, gb
c)
Gg, BB, GB, GB
d)
gg, Bb, gB, gb
14.
R= red 
r= green
Which color is recessive?
a)
red
b)
green
c)
both
d)
brown
15.
In a dihybrid cross
a)
one trait is crossed.
b)
two traits are crossed.
c)
four boxes are needed for the punnett square.
d)
mom's alleles are dominant.