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WorksheetsPunnett Squares - Complete, Incomplete, Codominance, Multiple
Total questions: 20
Worksheet time: 40mins
When one allele is not dominant over another, resulting in a blended phenotype for heterozygous offspring is considered....
Incomplete Dominance
Codominance
Some flowers are controlled by codominance. Red flowers (RR), blue flowers (BB) and Speckled flowers (RB).
Cross a red flower with a speckled flower. What is the phenotypic ratio?
2 red, 2 speckled
2 red, 2 blue
2 blue, 2 speckled
What type of inheritance pattern is shown here?
Codominance
Incomplete dominance
Some flowers are controlled by codominance. Red flowers (RR), blue flowers (BB) and Speckled flowers (RB).
Cross a red flower with a blue flower.
1 red, 2 speckled, 1 blue
2 red, 2 blue
4 speckled
1 red, 1 speckled, 2 blue
A calico cat shows both the traits for orange fur and black fur. What kind of allele expression is this?
Incomplete dominance
Codominance
A woman with curly hair and a man with straight hair produced a child with wavy hair:
Incomplete dominance
Codominance
Complete dominance
A man with blue eyes and a woman with brown eyes produced a child with brown eyes:
Incomplete dominance
Codominance
Complete dominance
Some flowers are controlled by codominance. Red flowers (RR), blue flowers (BB) and Speckled flowers (RB).
Cross two speckled flowers.
1 red, 2 speckled, 1 blue
2 red, 2 blue
2 blue, 2 speckled
1 red, 1 speckled, 2 blue
The hair form gene shows incomplete dominance. Straight hair (SS) is dominant, curly hair (CC) is recessive, and wavy hair (SC) is heterozygous. Mr. and Mrs. Anderson both have wavy hair (SC). What percentage of their children will also have wavy hair (SC)?
25%
50%
75%
100%
If a person has type B blood, the phenotype is B. What can the genotype be?
IBIB or IBi
IAIA or IAi
IAIB
ii
If a person has type A blood, the phenotype is A. What can the genotype be?
IBIB or IBi
IAIA or IAi
IAIB
ii
If a person has type AB blood, the phenotype is AB. What can the genotype be?
IBIB or IBi
IAIA or IAi
IAIB
ii
Incomplete dominance occurs in cats, which allows them to be Black, White, or gray as shown on this Punnett square. What percentage of the offspring will be black?
25
50
75
100
If a person has type O blood, the phenotype is O. What can the genotype be?
IBIB or IBi
IAIA or IAi
IAIB
ii
What are the blood types of the possible children that a woman (type O) and man (type AB) can have?
O and AB
O and A
O and B
A and B
Two parents think THEIR baby was switched at the hospital. Lulu (mom) has blood type A, and Caesar (dad) has blood type B. The baby has blood type AB. What is the mom's possible genotype? check all that apply
Iᴬi
IᴬIᴬ
Iᴮi
IᴮIᴮ
A woman has type B blood and her husband has type O blood. What must be the woman's genotype, if they have a child with type O blood?
BO
BB
OO
B
If the father is type A and the mother is type B, in order for baby Sylvester to have the genotype ii, his parents must be?
Heterozygous
Homozygous
AB blood type is an example of what type of inheritance? Both alleles show in the phenotype
complete dominance
incomplete dominance
codominance
polygenic inheritance
In humans, having freckles (F) is dominant to not having freckles (f). What is the percent chance that a married couple with no freckles will give birth to a child who has freckles?
0%
25%
50%
75%
100%
