The Integration of Genetic Maps Using Bayesian Inference (2010)

Author(s): Jow H, Bhattacharjee M, Boys RJ, Wilkinson DJ

    Abstract: In the absence of a comprehensive sequence-based map of a species' genome, genetic maps constitute the next best source of genetic information. Information derived from such maps can be used, for example, in identifying the genes that form quantitative trait loci (QTLs) and for performing comparative genomics between species. Integrating information from a collection of maps will provide more accurate inferences on, for example, marker locations. We describe a method for integrating (possibly conflicting) experimentally derived genetic maps. It assumes a fully probabilistic model that describes the relationship between experimentally derived genetic maps and the integrated map. The model views experimentally derived maps for a given species' chromosome as noisy realisations of a single “true” map, where the noise consists of possible linear distortions and measurement error on the marker locations. Bayesian statistical inference methodology is then used to infer the integrated map (the “true” map) and its attendant uncertainties in the marker locations by using data from a number of experimentally determined genetic maps. The method is shown to work well on simulated data and is used to integrate linkage maps of Pig chromosome 6 and also linkage and radiation hybrid maps of Cow chromosome 1.

      • Date: 28-06-2010
      • Journal: Journal of Computational Biology
      • Volume: 17
      • Issue: 6
      • Pages: 825-840
      • Publisher: Mary Ann Liebert, Inc. Publishers
      • Publication type: Article
      • Bibliographic status: Published

      Professor Richard Boys
      Professor of Applied Statistics

      Professor Darren Wilkinson
      Professor of Stochastic Modelling