Evidence that Linkage Group IV as well as Linkage Group X of the mouse are in chromosome 10

Abstract

SUMMARYFour translocations in which one breakpoint was known to be at or closely linked to the LGIV marker Steel, Sl, were studied in an attempt to identify cytologically the as yet unassigned Linkage Group IV of the mouse. The cytological results indicate that chromosome 10, which had previously been matched with LGX, is involved in each of the four translocations, the break being in 10D. Recombination between Sl and the LGX marker grizzled, gr, was determined to be 6–14%. The combined cytological and genetic results indicate that LGIV and LGX are both in chromosome 10, and that the order may be centromere-gr-Sl.