Nick Barton

Introgression under linear selection on continuous genomes

The paper models introgression of a small genomic block with weakly selected loci into a population, showing survival depends on selection strength relative to recombination.

Sign epistasis extends the effects of balancing selection on genetic diversity

The paper models how balancing selection can extend its diversity-promoting effects to loci with sign epistasis, showing dominance and recombination rate are key factors.

Genome-wide cline analysis identifies new locus contributing to a barrier to gene flow across an Antirrhinum hybrid zone

Genealogical analysis of replicate flower colour hybrid zones in Antirrhinum

The paper analyzes replicate flower color hybrid zones in Antirrhinum to identify loci associated with gene flow barriers using haplotagging, FST scans, and genealogical methods.

Extreme long-range migration distorts flower colour clines in an Antirrhinum hybrid zone

The paper examines flower colour clines in a hybrid zone of Antirrhinum majus, finding that long-distance dispersal, not linkage disequilibrium, shapes the stepped cline patterns.

Evolution and information content of optimal gene regulatory architectures

The paper derives an optimality principle for gene regulatory architectures using population genetics and information theory, showing how evolutionary selection optimizes genotype-phenotype maps.

Local adaptation in a metapopulation - a multi-habitat perspective

This paper extends local adaptation models to multi-habitat scenarios, showing how polymorphism persistence depends on migration, selection pressure, and habitat symmetry.

Introgression of a block of genome under infinitesimal selection

This study examines how polygenic selection affects genome introgression under an infinitesimal model with linkage, showing distinct dynamics compared to neutral introgression.

Estimating barriers to gene flow from distorted isolation by distance patterns

This paper introduces a method to estimate linear barriers to gene flow by analyzing isolation by distance patterns in genetic data.

Limits to adaptation along environmental gradients

The paper explains why species ranges have limits by showing genetic drift reduces variance needed for adaptation, leading to sharp range margins even without abrupt environmental changes.