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© Oxford University Press

Bi-dimensional scaling map (BDS-Map): an approach for building large genetic maps

Stephen Goldberg 1, Patrick Ferrand 2, N.Quoi Nguyen 1, Jean-Frangois Boisvieux 2 and Serge Hazout 1,3

1Centre de Bioinformatique, INSERM U 155 ump; University Pans 7, 2 place Jussieu 75251 Paris Cedex 05 France
2Département de Biomathématiques&Service d'lnformatique Médicale C.H.U. Pitié-Salpétriêre, 91 Boulevard de I'Hopital, 75634 Paris Cedex 13, France

3To whom correspondence should be addressed

Motivation: The approaches usually used for building large genetic maps consist of dividing the marker set into linkage groups and provide local orders that can be tested by multi-point linkage analysis. To deal with the limitations of these approaches, a strategy taking the marker set into account globally is defined.Results: The paper presents a new approach called 'Bi-Dimensional Scaling Map (BDS-Map) for inferring marker orders and distances in genetic maps based on the use of an additional dimension orthogonal to the map into which markers are projected. Dynamical forces based on a two-point analysis are applied to tend to optimize the marker locations in space. The efficiency of the approach is exemplified on real data (16 and 70 markers on chromosomes 6 and 2, respectively) and simulated data (50 maps of 70 markers).Availability: The package called ANGE (ANalyse du GE-nome), including both the program BDS-Map and the system allowing the database management, is available on request from the authors.Contact: E-mail:hazout{at}urbb.jussieu.fr

Received on November 18, 1996
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