We're going to discuss a concept, a phenomenon known as playotropy, and we're also going to look at episodes. So let's begin by describing what playotropy is. So playotropy is the process by which a pair of alleles on a single locus on some homologous chromosome affects the expression of more than one type of trait, of many different types of traits. And to see exactly what we mean by that, let's consider albino individuals. So, in albino individuals, it's a single pair of jeans at some particular locus that actually affects the expression of three different types of characteristics, of three different types of phenotype traits. So, number one, lack of pigment hair, lack of pigment in the hair.