Biostatistics Advance Access originally published online on December 14, 2005
Biostatistics 2006 7(3):374-386; doi:10.1093/biostatistics/kxj012
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Incorporating interference into linkage analysis for experimental crosses
Division of Radiotherapy, Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX Amsterdam, The Netherlands n.armstrong{at}nki.nl
Department of Statistics, University of Chicago, Chicago, IL 60637, USA
Department of Statistics, University of California at Berkeley, Berkeley, CA 94720, USA and Division of Genetics and Bioinformatics, Walter and Eliza Hall Institute of Medical Research, Melbourne, Australia
* To whom correspondence should be addressed.
The phenomenon of interference in genetic recombination is well-known and studied in a wide variety of organisms. Multilocus linkage analysis, which makes use of recombination patterns among all genetic markers simultaneously, is routinely used with data on humans and experimental organisms to build genetic maps. It is also used to try to determine the genes involved in traits of interest, such as common diseases. Most linkage analyses performed today ignore the occurrence of genetical interference. We present an extension to the LanderGreen algorithm for experimental crosses (backcross and intercross) to incorporate crossover interference according to the
2 model. Simulation results show the impact of using this model on the accuracy of estimated genetic maps.
Keywords: Crossover interference; Hidden Markov model; Linkage analysis