I think a lot of people get confused because super hypos are often referred to as dominant because they carry a pair of mutant alleles. The words dominant, codomninant, and recessive really refer to how the mutant allele interacts with a normal allele. In a dominant trait, the mutant allele dominates the normal allele and expresses itself solely. In a codominant trait, neither the mutant allele nor the normal allele completely express themselves; they kind of blend together. In a recessive trait, the normal allele dominates the mutant allele and expresses itself fully. You can think of recessive and dominant as inverses of each other. The only difference is that the standard is to state how the mutant allele acts in relation to the normal allele, not the other way around.

Matt

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