Genetic maps are the primary resources for genetic study. Genetic map construction was quite difficult in the past decade for lack of polymorphic markers. This situation has been changed since the development of microsatellite markers or simple sequence length polymorphisms (SSLPs) because they are abundant and more polymorphic. Here we report the construction of an integrated genetic map of the rat derived from two F2 intercrosses. A map of 376 markers from 160 (OLETF × F344)F2 progenies and a map of 333 markers from 71 (F344 × LEC)F2 animals are integrated by use of common set of 120 anchor markers chosen to be spaced at an average of 15 cM in the genome. The resulting integrated map with 194 newly developed rat markers from WIBR/MIT CGR, 269 Mit/Mgh markers, 94 Wox markers, and 5 markers of various origins covers the majority of 21 chromosomes of the rat with a total genetic distance of 1797 cM and an average marker spacing of 3.2 cM. The current map provides detailed information for markers from different sources and, therefore, should be helpful to the research community.
Mammalian Genome – Springer Journals
Published: Dec 1, 1998
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