[Identification of the effects of the X chromosome in component partitioning of phenotypic variance]

General measure of phenotypic variation in a population of unlike-sex relatives is discussed. A novel method is suggested for a component partitioning genotypic variance and covariances between relatives in a system with an arbitrary number of independent loci (autosomal, homosomal, polyallelic). The method is based on the use of component partitioning of phenotypic variance in systems of different types of loci. The table of numerical coefficients of component partitioning of covariances between relatives of common genetic classes is presented.