Genotype-environment interactions and the maintenance of polygenic variation.

  title={Genotype-environment interactions and the maintenance of polygenic variation.},
  author={J. Hayley Gillespie and Michael Turelli},
  volume={121 1},
Genotype-environment interactions may be a potent force maintaining genetic variation in quantitative traits in natural populations. This is shown by a simple model of additive polygenic inheritance in which the additive contributions of alleles vary with the environment. Under simplifying symmetry assumptions, the model implies that the variance of the phenotypes produced across environments by a multilocus genotype decreases as the number of heterozygous loci increases. In the region of an… CONTINUE READING