Question

Two alleles of gene control hair color in horses: homozygous for allele C1 are red, heterozygotes are yellow, homozygotes are cream. What type of allele interaction is described?

- incomplete dominance
- recessive lethality
- co-dominance
- complete dominance
- pleiotropy

Answer 1

The allele interaction in horses that results in red, yellow, and cream hair colors based on the combination of alleles is an example of incomplete dominance.

Step-by-step explanation:

The type of allele interaction described in horses, where homozygous for allele C1 are red, heterozygotes are yellow, and homozygotes for the alternative allele are cream, is called incomplete dominance. This means that in the heterozygote condition, neither allele is completely dominant over the other, resulting in a phenotype that is a blend of the two. Hence, neither the red nor the cream allele shows complete dominance in the heterozygous state, which leads to the yellow phenotype.