Principles of Inheritance and Variation

Question

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

Answer

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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