This question seems to lack information. Please complete.
Codominance - <span>A form of dominance in which the alleles of a gene pair in a heterozygote are fully expressed thereby resulting in offspring with a phenotype that is neither dominant nor recessive.
</span>Mutation<span> occurs when a DNA gene is damaged or changed in such a way as to alter the genetic message carried by that gene.</span>
I believe the correct answer to the question is D. This answer choice makes the most sense given the context. Also, since RNA is less stable than DNA, it mutates more often.
Lowercase b is the allele that goes in 3
