The genotypic distribution of relatives of homozygotes when consanguinity is present

A correction is made to an expression given by Jacquard (1968, 1972a,b) for the genotypic distribution of a relative of a given homozygote when consanguinity is present. The correction will necessarily be small either if the allele present in the given homozygote has a frequency of near unity, or if the coefficient of inbreeding of the given homozygote is small.