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RECORD: a Novel Method for Ordering Loci on a Genetic Linkage Map

Overview
Journal Theor Appl Genet
Publisher Springer
Specialty Genetics
Date 2005 Oct 18
PMID 16228189
Citations 140
Authors
Hans van Os
Piet Stam
Richard G F Visser
Herman J van Eck
Affiliations
Soon will be listed here.
Abstract

A new method, REcombination Counting and ORDering (RECORD) is presented for the ordering of loci on genetic linkage maps. The method minimizes the total number of recombination events. The search algorithm is a heuristic procedure, combining elements of branch-and-bound with local reshuffling. Since the criterion we propose does not require intensive calculations, the algorithm rapidly produces an optimal ordering as well as a series of near-optimal ones. The latter provides insight into the local certainty of ordering along the map. A simulation study was performed to compare the performance of RECORD and JoinMap. RECORD is much faster and less sensitive to missing observations and scoring errors, since the optimisation criterion is less dependent on the position of the erroneous markers. In particular, RECORD performs better in regions of the map with high marker density. The implications of high marker densities on linkage map construction are discussed.

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