On the Distribution of the Mean and Variance of a Quantitative Trait under Mutation-Selection-Drift Balance

AUTOR(ES)

Burger, R.

RESUMO

The distributions of the mean phenotype and of the genetic variance of a polygenic trait under a balance between mutation, stabilizing selection and genetic drift are investigated. This is done by stochastic simulations in which each individual and each gene are represented. The results are compared with theoretical predictions. Some aspects of the existing theories for the evolution of quantitative traits are discussed. The maintenance of genetic variance and the average dynamics of phenotypic evolution in finite populations (with N(e) < 1000) are generally simpler than those suggested by some recent deterministic theories for infinite populations.

Documentos Relacionados

• Maintenance of Genetic Variability under the Joint Effect of Mutation, Selection and Random Drift
• Linkage Disequilibrium and Genetic Variances under Mutation-Selection Balance
• Mutation-Selection Balance under Genomic Imprinting at an Autosomal Locus
• The Effects of R- and K-Selection on Components of Variance for Two Quantitative Traits
• Computation of the Full Likelihood Function for Estimating Variance at a Quantitative Trait Locus