Incomplete Dominance Flashcards
1
Q
What allele is usually expressed in a heterozygous genotype?
A
Normally the dominant allele is expressed
2
Q
Usually what is the only case for the expression of the recessive allele?
A
The homozygous recessive genotype
3
Q
What is incomplete dominance?
2
A
Incomplete dominance means that neither allele is dominant or recessive with respect to the other
Both alleles are equally expressed in the heterozygous genotype to produce an intermediate phenotype
4
Q
What is another name for incomplete dominance?
A
Codominance
5
Q
Give two examples of incomplete dominance
A
Coat colour in shorthorn cattle
Flower colour in snapdragons
6
Q
What are the possible coat colours of shorthorn cattle?
A
Red (RR)
White (rr)
Roan (Rr)
7
Q
What are the possible flower colours of snapdragons
A
Red flowers (RR) White flowers (rr) Roan (Rr)
