Principles of Inheritance and Variation
A gene showing codominance has:
One allele dominant on the other
alleles tightly linked on the same chromosome
alleles that are recessive to each other
both alleles independently expressed in the heterozygote
D.
both alleles independently expressed in the heterozygote
A gene shows codominance when both alleles in heterozygous condition, express their traits independently instead of showing dominant-recessive relationship and such alleles are called codominant alleles.
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