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Can alleles have cyclic dominance?

Biology Asked by mewsoften on November 4, 2020

Do the relationships between alleles always form a hierarchy? Ignoring partial and codominance, can alleles have a cyclic relationship? For example, is there anything that exists analogous to the following 3 fictional alleles:

Rock -> Scissors -> Paper -> Rock

If so, it’s easy to see what would happen in a diploid relationship and which phenotype would be expressed. But what would happen in a triploid organism? Would nothing be expressed because each allele was dominated by another?

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