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WorksheetsET Dihybrid Cross Review 3/11/25
Total questions: 6
Worksheet time: 13mins
Name
Class
Date
1.
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%
2.
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)
3/16
b)
4/16
c)
8/16
d)
12/16
3.
What proportion of the offspring in Figure 11-4 would be expected to have white, smooth hair?
a)
9/16
b)
3/16
c)
4/16
d)
1/16
4.
parent 1: GgBB
parent 2: ggBb
Find the gametes for parent 1.
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
5.
A couple has three brown-eyed children. The parents are brown-eyed (Bb). The allele for brown eyes is dominant over the allele for blue eyes. They believe the fourth child they have will be blue-eyed. Which statement below explains what actually will happen?
a)
The couple will have a blue-eyed fourth child.
b)
The couple will have a brown-eyed fourth child.
c)
They have a 75% chance of having a blue-eyed child.
d)
They have a 25% chance of having a blue-eyed child.
6.
In the dihybrid above, what are the genetic crosses for the parents?
a)
BBEE X bbee
b)
BBEE x BBEe
c)
BbEe x BbEe
d)
bbee x bbee
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