Substantial phenotypic and genotypic evidence exists to demonstrate heterogeneity within the species. Pleiotropy describes the genetic effect of a single gene on multiple phenotypic traits. There were 3 quantitative trait loci that explained most of the phenotypic variation. This resulted in a significant loss of phenotypic and genetic diversity within the species. Hence a genetic screen is a type of phenotypic screen. Such an adaptation is an example of phenotypic plasticity. Underdominance of the locus is another possibility of phenotypic expression. Schizotypy is an example of a psychological phenotypic trait found in schizophrenia-spectrum disorders. It thus places an upper-limit on additive heritability of twice the full-Sib phenotypic correlation. This predicted 3&colon;1 phenotypic ratio assumes Mendelian inheritance. An example of a phenotypic trait is a specific hair color. Understand how empirical spectral distribution of G predicts the response to selection across phenotypic space. The study attempted to distinguish conceptually phenotypic matching from positive sexual imprinting. Polydactyly in Maine Coon cats is characterised by broad phenotypic diversity. These phenotypic changes may, e.g., be increased anxiety and gut dysfunction.