caa a22 4500 386392943 CHVBK 20180307112125.0 cr unu---uuuuu 161130e198908 xx s 000 0 eng 10.1017/S0016672300028366 doi S0016672300028366 pii (NATIONALLICENCE)cambridge-10.1017/S0016672300028366 Quantitative genetic variability maintained by mutation-stabilizing selection balance: sampling variation and response to subsequent directional selection [Elektronische Daten] A model of genetic variation of a quantitative character subject to the simultaneous effects of mutation, selection and drift is investigated. Predictions are obtained for the variance of the genetic variance among independent lines at equilibrium with stabilizing selection. These indicate that the coefficient of variation of the genetic variance among lines is relatively insensitive to the strength of stabilizing selection on the character. The effects on the genetic variance of a change of mode of selection from stabilizing to directional selection are investigated. This is intended to model directional selection of a character in a sample of individuals from a natural or long-established cage population. The pattern of change of variance from directional selection is strongly influenced by the strengths of selection at individual loci in relation to effective population size before and after the change of regime. Patterns of change of variance and selection responses from Monte Carlo simulation are compared to selection responses observed in experiments. These indicate that changes in variance with directional selection are not very different from those due to drift alone in the experiments, and do not necessarily give information on the presence of stabilizing selection or its strength. Copyright © Cambridge University Press 1989 Keightley Peter D. Department of Genetics, University of Edinburgh, West Mains Road, Edinburgh EH9 3JN Hill William G. Department of Genetics, University of Edinburgh, West Mains Road, Edinburgh EH9 3JN Genetical Research Cambridge University Press 54/1(1989-08), 45-58 0016-6723 54:1<45 1989 54 GRH https://doi.org/10.1017/S0016672300028366 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1017/S0016672300028366 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Keightley Peter D. Department of Genetics, University of Edinburgh, West Mains Road, Edinburgh EH9 3JN NATIONALLICENCE 700 1- Hill William G. Department of Genetics, University of Edinburgh, West Mains Road, Edinburgh EH9 3JN NATIONALLICENCE 773 0- Genetical Research Cambridge University Press 54/1(1989-08), 45-58 0016-6723 54:1<45 1989 54 GRH CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence SWISSBIB 386227284 BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge