title: Back to the future: genetic correlations, adaptation and speciation.
abstract: Genetic correlations can affect the course of phenotypic evolution. Although genetic correlations among traits are a common feature of quantitative genetic analyses, they have played a very minor role in recent linkage-map based analyses of the genetic architecture of quantitative traits. Here, we use our work on host-associated races in pea aphids to illustrate how quantitative trait locus (QTL) mapping can be used to test specific hypotheses about how genetic correlations may facilitate ecological specialization and speciation.
authors.affiliation: Department of Biology, University of Maryland, College Park, MD 20742, USA. svia@umd.edu
authors.forename: Sara
authors.initials: S
authors.lastname: Via
authors.forename: David J
authors.initials: DJ
authors.lastname: Hawthorne
mesh_terms: D000220:Adaptation, Biological / Q000235:genetics*; D000818:Animals; D001042:Aphids / Q000235:genetics; D005075:Biological Evolution; D002874:Chromosome Mapping; D004777:Environment; D008040:Genetic Linkage; D005819:Genetic Markers; D014644:Genetic Variation; D040641:Quantitative Trait Loci
chemical_list: D005819:Genetic Markers