Abstract

THE FOLLOWING MODELS ARE CONSIDERED FOR THE GENETIC DETERMINATION OF QUANTITATIVE TRAITS: segregation at one locus, at two linked loci, at any number of equal and additive unlinked loci, and at one major locus and an indefinite number of equal and additive loci. In each case an appropriate likelihood is given for data on parental, F(1) and backcross individuals, assuming that the environmental variation is normally distributed. Methods of testing and comparing the various models are presented, and methods are suggested for the simultaneous analysis of two or more traits.