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WorksheetsPunnett Squares Incomplete and Codominance
Total questions: 22
Worksheet time: 44mins
The different forms of a gene are called ---
traits
hybrids
alleles
This type of inheritance pattern is a MIXTURE of two traits. This is known as ---
incomplete dominance.
codominance
A condition in which both alleles for a gene are expressed so that both traits are visible is known as ---
Codominance
Incomplete 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
In mice coat color is incompletely dominant. Black and white are homozygous. Brown mice are heterozygous.
What is the genotype for a brown mouse?
BB
Bb
bb
Complete a cross between 2 speckled flowers and find the genotype ratio.
A father is heterozygous for his type A blood and a mother is heterozygous for her type B blood. What percentage of their offspring would you expect to have?
50% all blood types
25% Type A, 50% Type B, 25% Type O
50% Type A, 50% Type B
Type A 25%, Type B 25%, Type AB 25%, Type O 25%
A father has type AB blood and the mother has type O. What percentage of their offspring would you expect to have?
Type A, 25%, Type B 25%, Type AB 25%, Type O 25%
Type A 50%, Type B 25%, Type AB 25%, Type O 50%
Type A blood 50%, Type B 50%, Type AB 0%, Type O Blood 0%
Type A blood 100%
Epistasis is the interaction between_____________ genes.
2
4
3
16
Which best describes epistasis?
An allele that changes the genotype of another allele
A gene that changes the genotype of another gene
An allele that controls or masks the expression of another allele
A gene that controls or masks the expression of another gene
Labrador retriever's fur color is an example of epistasis. In this case the E gene controls the expression of the B gene. It a puppy was born with the genotype eeBB its fur color would be ________ and if it was born with the genotype EEbb it would be __________
yellow, yellow
yellow, black
chocolate, black
yellow, chocolate
The two cows on the top are the parents and the cow on the bottom is the offspring. What is the type of inheritance pattern is being exhibited?
Incomplete Dominance
Codominance
Multiple Alleles
Polygenic Inheritance
What type of inheritance pattern does the diagram represent?
Incomplete Dominance
Codominance
Multiple Alleles
Polygenic Inheritance
