For a model in which quantitative traits are assumed to be determined solely by additive
genes at many loci, formulae are developed for the variance among replicated small …

Population genetics is concerned with the study of the genetic, ecological, and evolutionary
factors that influence and change the genetic composition of populations. The emphasis …

Estimating the genetic and environmental variances for multivariate and function-valued
phenotypes poses problems for estimation and interpretation. Even when the phenotype of …

This book covers those areas of theoretical population genetics that can be investigated
rigorously by elementary mathematical methods. I have tried to formulate the various models …

We study the trajectory of an allele that affects a polygenic trait selected toward a phenotypic
optimum. Furthermore, conditioning on this trajectory we analyze the effect of the selected …

The equilibrium distribution of a quantitative character subject to frequency-and density-
dependent selection is found under different assumptions about the genetical basis of the …

An efficient computing strategy for estimating variance and covariance components between
and within random effects by Restricted Maximum Likelihood is described. It pertains to data …

The well-known simplex model is extended to a model that may be used for the genetic and
environmental analysis of covariance structures. This “double” simplex structure can be …

ABSTRACT A model of selection is described in which optimizing phenotypic selection is
combined with pleiotropic overdominance. Thus, the role that mutation commonly plays in …

The mechanism by which genetic variability is maintained in natural populations for
quantitative characters is not well understood. Many observations show that there is a …