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WorksheetsDihybrid/Monohybrid Cross Quiz
Total questions: 14
Worksheet time: 32mins
Name
Class
Date
1.
A dihybrid cross shows the possible outcomes of _______
a)
two alleles
b)
two parents
c)
two traits/characters
d)
a self pollination
2.
A red flower (Rr) is crossed with a white flower (rr). What is the genotypic ratio?
a)
0 RR; 0 Rr: 4 rr
b)
2 RR; 0 Rr: 2 rr
c)
4 RR; 0 Rr: 0 rr
d)
0 RR; 2 Rr: 2 rr
3.
T4 - Black fur in mice (B) is dominant to brown fur (b). Short tails (T) are dominant to long tails (t). What percentage of the offspring of the cross BbTt x BBtt will have black fur and long tails?
a)
0%
b)
25%
c)
50%
d)
100%
4.
A male beetle has the genotype Ttbb. If this beetle mates with a female with genotype TTBb, what is the chance their offspring will have the genotype TtBb?
a)
12.5%
b)
25%
c)
50%
d)
75%
5.
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
6.
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
7.
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
8.
What goes in box 1
a)
AABb
b)
AABB
c)
aabb
d)
AaBb
9.
What goes in box 3
a)
Aabb
b)
AABB
c)
AAbb
d)
aaBb
10.
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?
(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%
11.
Long tongues (T) are dominant to short tongues in green tree frogs. What is the probability that two frogs that are heterozygous for long tongues could produce offspring with short tongues?
a)
100%
b)
75%
c)
50%
d)
25%
12.
How can two parents with brown eyes have a child with blue eyes?
a)
The parents may both have recessive genes 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
13.
Donkey and the fire-breathing dragon have lots of babies. If breathing fire is a recessive trait (f), what must be Donkey’s genotype if they have a baby that breathes fire?
a)
FF
b)
ff
c)
Ff
d)
F
14.
What is the correct phenotype ratio when crossing two heterozygous parents in a dihybrid cross?
a)
100% heterozygous
b)
1:2:1
c)
3:1
d)
9:3:3:1
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