Can phenotypic variability of polygenic traits yield information regarding selection?
The relation between phenotypic variability and heterozygosity for a polyallelic polygenic trait is obtained using computer simulation. It is shown that unlike the di-allelic case, the variance of phenotypic score of the trait can increase or decrease depending on the allele frequency distribution. The relevance of this to selection is discussed.
Mani
G S
GS
Physics Department, University of Manchester, U.K.
D000483:Alleles; D003198:Computer Simulation; D005787:Gene Frequency; D008957:Models, Genetic; D010641:Phenotype; D012641:Selection, Genetic