Codominance
A) occurs when heterozygotes show a phenotype intermediate between those of the two homozygotes.
B) involves the expression of both alleles at a locus producing two different phenotypes.
C) is only found in mammalian enzyme production.
D) involves one allele having more than one phenotypic effect.
E) would result in pink flowers from a cross between white and red flowers.

Question

Quizplus · Accepted Answer

Codominance involves the expression of both alleles at a locus producing two different phenotypes. This means that neither allele is dominant or recessive, and both are expressed equally. An example of codominance is the ABO blood type system in humans, where a person with both A and B alleles will express both A and B antigens on their red blood cells, resulting in a type AB blood phenotype.