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Identify the statement that most accurately and completely describes codominance and incomplete dominance with respect to heterozygotes.
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Identify the statement that most accurately and completely describes

codominance and incomplete dominance with respect to heterozygotes.


A) Incomplete dominance - heterozygotes express a third phenotype that is in-between the homozygous phenotypes because the expression of one dominant allele looks different than the expression of two dominant alleles. Codominance - heterozygotes express the phenotype for both alleles.   
B) Incomplete dominance - heterozygotes express a third phenotype that is different from both homozygous phenotypes. Codominance - heterozygotes express the homozygous recessive phenotype because another gene at a different locus affects the expression of the dominant allele.
C) Incomplete dominance - heterozygotes express a blended version of both dominant and recessive alleles and if crossed with another heterozygote their offspring can never express a homozygous phenotype. Codominance - heterozygotes weakly express the homozygous dominant phenotype because there is only one copy of the dominant allele.
D) Incomplete dominance - heterozygotes express a little of each allele because both are present in the genotype. Codominance - heterozygotes express the dominant phenotype in some cells and the recessive phenotype in other cells. 
E) Incomplete dominance - heterozygotes express a third phenotype that affects multiple traits. Codominance - heterozygotes express neither the dominant or recessive allele but express a hybrid of both alleles instead.

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Subject: Biology, Science

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