Question

What do geneticists call alleles are both expressed in the phenotype when they are together

Answer 1

codominance = both phenotypes expressed (like a patchy cow)

incomplete dominance = blending of phenotypes e.g. red and white parents make pink offspring.

Answer 2

The correct answer is:

b. codominance

Explanation:

Codominance is a kind of dominance wherein the alleles of a gene set in a heterozygote are fully represented. This results in offspring with a phenotype that is not dominant nor recessive. A typical example telling codominance is the ABO blood group system.