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WorksheetsQuizziz - practice dihybrids/incomplete/co-dominance - 1st
Total questions: 11
Worksheet time: 51mins
Name
Class
Date
1.
The image above is an example of
a)
blending
b)
a phenotype
c)
homozygous
d)
a dihybrid cross
2.
Incomplete dominance or co-dominance?
This type of inheritance pattern is a MIXTURE of both traits.
This type of inheritance pattern is a MIXTURE of both traits.
a)
incomplete dominance
b)
co-dominance
3.
Incomplete dominance or co-dominance?
A calico cat shows both the traits for orange fur and black fur.
A calico cat shows both the traits for orange fur and black fur.
a)
Incomplete Dominance
b)
Co dominance
4.
A roan cow shows co-dominance in fur color (orange and white). What is the phenotype ratio expected if a roan cow and a roan steer mate together?
a)
4: Orange and White
b)
1: Orange : 1 White
c)
2 Orange: 2 Orange and White: 0 White
d)
1: Orange: 2 Orange and White: 1 White
5.
What genotype is missing from this Punnett Square?
a)
RrYy
b)
RRYY
c)
rryy
d)
RrYY
6.
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
7.
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%
8.
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
9.
Ratios:
A breed of chicken shows codominance for feather color. One allele codes for black feathers, another codes for white feathers. The feathers of heterozygous chickens of this breed will be:
A breed of chicken shows codominance for feather color. One allele codes for black feathers, another codes for white feathers. The feathers of heterozygous chickens of this breed will be:
a)
all black
b)
all white
c)
all gray
d)
speckled black and white
10.
This is an example of ___________.
a)
Incomplete Dominance
b)
Codominance
11.
This is an example of ___________?
a)
Incomplete dominance
b)
Co-Dominance
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