Geographic structure can affect patterns of genetic differentiation and speciation rates. In this article, we investigate the dynamics of genetic distances in a geographically structured metapopulation. We model the metapopulation as a weighted directed graph, with N vertices corresponding to N homogeneous subpopulations. The dynamics of the genetic distances is then controlled by two types of ...

This paper explores distance measures based on genetic operators for genetic programming using tree structures. The consistency between genetic operators and distance measures is a crucial point for analytical measures of problem difficulty, such as fitness distance correlation, and for measures of population diversity, such as entropy or variance. The contribution of this paper is the explorat...

fifteen microsatellite markers were employed to evaluate genetic relationships among different iranian species of crocus spp. (c. sativus, c. haussknechtii, c. cancellatus, c. speciosus, and c. caspius) from ten geographical regions (ghaen, gonabad, estahban, ferdows, veresk, reno, ali abad, kali abad, neka, and eslam abad). of these, 12 primers revealed polymorphism among crocus spp. average p...

six highly variable microsatellite loci were used to investigate the genetic diversity and population structure of the garra rufa in kermanshah and bushehr provinces, iran. all of the 6 microsatellite loci screened in this study showed polymorphism. a total of 90 individual fish from 3 populations were genotyped and 60 alleles were observed in all loci. the number of alleles per locus ranged fr...

this study compares diversity patterns of five microsatellite (ssr) markers in two iranian native horse populations (turkoman sahra and turkoman jergelan) to infer relationships between them and to compare levels of their polymorphism for use in conservation efforts. two populations across microsatellite loci had significant deviations from hardy-weinberg equilibrium. average number of alleles ...

Due to highly consumption of extensive wild germplasm of Allium hirtifolium Boiss (Mooseer) in food and medicinal industry, exploration and domestication process have been done in Golestan province (Gorgan). Economic productions of domesticated Persian Shallot plants need to be improved through breeding process. The successes of domesticated accessions improvement program depend on the availabl...

Let a graph G = (V;E) be given. In the path center problem we want to find a path P in G such that the maximum weighted distance of P to every vertex in V is minimized. In this paper a genetic algorithm and ahybrid of genetic and ant colony algorithms are presented for the path center problem. Some test problems are examined to compare the algorithms. The results show that for almost all exampl...