Abstract
We have investigated 67 primers designed by Dr. J. Todd and co-workers to amplify microsatellites sequences in the mouse. We report on additional polymorphisms concerning seven laboratory inbred strains, complementary to those already published. We include the survey of three independently derived strains of Mus spretus: SPE/Pas, SEG/Pas and SPR/Smh. SPE/Pas and SEG/Pas are very close (3% polymorphism), whereas the third one, (SPR/Smh), is very different from the other two strains (33% polymorphism). Seventy-four to 84% of the microsatellites analyzed in this study are polymorphic between C57BL/6Pas and Mus spretus strains. By comparison, 36-46% are polymorphic between laboratory inbred strains involved in established sets of recombinant inbred strains. A strain derived from Mus musculus musculus (PWK/Pas) was found to be very different from both C57BL/6Pas (70% polymorphism) and SPE/Pas (82% polymorphism). These results emphasize the interest of using Mus musculus musculus inbred strains to establish interspecific crosses, particularly when considering their breeding performances.
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