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A Bayesian approach for constructing genetic maps when markers are miscoded

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Author(s): Rosa Guilherme | Yandell Brian | Gianola Daniel

Journal: Genetics Selection Evolution
ISSN 0999-193X

Volume: 34;
Issue: 3;
Start page: 353;
Date: 2002;
Original page

Keywords: genetic map construction | miscoded genotypes | Bayesian inference

ABSTRACT
Abstract The advent of molecular markers has created opportunities for a better understanding of quantitative inheritance and for developing novel strategies for genetic improvement of agricultural species, using information on quantitative trait loci (QTL). A QTL analysis relies on accurate genetic marker maps. At present, most statistical methods used for map construction ignore the fact that molecular data may be read with error. Often, however, there is ambiguity about some marker genotypes. A Bayesian MCMC approach for inferences about a genetic marker map when random miscoding of genotypes occurs is presented, and simulated and real data sets are analyzed. The results suggest that unless there is strong reason to believe that genotypes are ascertained without error, the proposed approach provides more reliable inference on the genetic map.

Tango Jona
Tangokurs Rapperswil-Jona

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