Near-periodic substitution and the genetic variance induced by environmental change

Bello, Y and Waxman, David (2006) Near-periodic substitution and the genetic variance induced by environmental change. Journal of Theoretical Biology, 239 (2). pp. 152-160. ISSN 0022-5193

Download (2MB) | Preview


We investigate a model that describes the evolution of a diploid sexual population in a changing environment. Individuals have discrete generations and are subject to selection on the phenotypic value of a quantitative trait, which is controlled by a finite number of bialleic loci. Environmental change is taken to lead to a uniformly changing optimal phenotypic value. The population continually adapts to the changing environment, by allelic substitution, at the loci controlling the trait. We investigate the detailed interrelation between the process of allelic substitution and the adaptation and variation of the population, via infinite population calculations and finite population simulations. We find a simple relation between the substitution rate and the rate of change of the optimal phenotypic value.

Item Type: Article
Additional Information: This theoretical work is one of only a few investigations into the full genetic effects of environmental change on quantitative traits. It establishes a connection between environmental change and substitution rate. I initiated and led this work that was carried out with my MSc student.
Schools and Departments: School of Life Sciences > Biology and Environmental Science
Subjects: Q Science > QA Mathematics
Q Science > QH Natural history > QH0301 Biology
Depositing User: SRO Admin
Date Deposited: 15 Feb 2007
Last Modified: 14 Oct 2019 11:00
Google Scholar:10 Citations

View download statistics for this item

📧 Request an update