Compare strict dominance with codominance.
A)In strict dominance,one allele dominates another so a heterozygote will exhibit the dominant phenotype for the trait.In codominance,both alleles are expressed so a heterozygote will exhibit both the phenotypes for the trait.
B)In strict dominance,both alleles are expressed so a heterozygote will exhibit both the phenotypes for the trait.In codominance,one allele dominates another so a heterozygote will exhibit the dominant phenotype for the trait.
C)In strict dominance,only the dominant allele is even present so the only phenotype expressed is that of the dominant allele.In codominance,only the recessive allele is even present so the only phenotype expressed is that of the recessive allele.
D)In strict dominance,heterozygous alleles produce a phenotype that is intermediate to the phenotypes of individuals who are homozygous for one allele or the other.In codominance,one allele dominates another so a heterozygote will exhibit the dominant phenotype for the trait.
E)In strict dominance,one allele dominates another so a heterozygote will exhibit the dominant phenotype for the trait.In codominance,heterozygous alleles produce a phenotype that is intermediate to the phenotypes of individuals who are homozygous for one allele or the other.

Question

Quizplus · Accepted Answer

Strict dominance and codominance are two different modes of inheritance. In strict dominance, one allele (the dominant allele) masks the expression of the other allele (the recessive allele), so a heterozygote will exhibit the dominant phenotype for the trait. In codominance, both alleles are expressed and contribute to the phenotype, so a heterozygote will exhibit both the phenotypes for the trait. Choice A correctly explains this difference.

Compare Strict Dominance with Codominance