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WorksheetsDihybrid Punnett Squares
Total questions: 10
Worksheet time: 13mins
Name
Class
Date
1.
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.
2.
What goes in box 3
a)
Aabb
b)
AABB
c)
AAbb
d)
aaBb
3.
What goes in box 15
a)
aabb
b)
AABB
c)
aaBB
d)
AAbb
4.
Based off this punnett square, what fraction of the offspring will have wrinkled, yellow seeds?
a)
9/16
b)
3/16
c)
1/16
d)
16/16
5.
Based off this punnett square, what fraction of the offspring will have wrinkled, green seeds?
a)
9/16
b)
3/16
c)
1/16
d)
16/16
6.
What is the genotype for a pea plant homozygous for round seeds (R), and heterozygous for yellow seeds?
a)
RrYy
b)
RRyy
c)
RRYy
d)
rryy
7.
T4 - What genotype is missing from this Punnett Square?
a)
RrYy
b)
RRYY
c)
rryy
d)
RrYY
8.
Assume mom's gametes are on the left, what is her genotype?
a)
TTZz
b)
TtZz
c)
ttZZ
d)
TtZZ
9.
Assume dad's gametes are on top, what is his genotype?
a)
AAPP
b)
AaPp
c)
aaPP
d)
Aapp
10.
If you have a parent who has GgBb as their genotype, what are the possible alleles they could donate to their gametes?
a)
GB, Gb, gB, gb
b)
GB, GB, gb, gb
c)
Gb, Gb, Gb, GB
d)
GG, BB, gg, bb
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