So we have our set of alleles. So these alleles basically express or produce some type of protein, and the protein goes on onto a second different locus. So this is locus number one and this is a different locus number two. And the protein goes on to the second locus and either inhibits or expresses the protein that is coded by these purple genes here. So allele pair number one, allele pair number two at a different locus. And so now the protein produced can either go on and either inhibit or express other alleles, or it can go on to actually express that single trait.