Contains supporting information Tables A-F.

Table A, Renag1 Variants. Genetic variants within the Renag1 minimal interval. Table B, Kit GenBank. GenBank accession numbers for Kit sequences. Table C, Uwm Markers. Additional polymorphic microsatellite markers developed for genotyping within the Renag1 region of RNO14. Table D, Congenic Markers. Markers used for positive and negative selection during generation of Renag1 congenic strains. Table E, ERV Primers. Sequences of primers used to amplify and/or sequence across the site of the ERV insertion in Kit intron 1. Table F, ISH Oligos. Primers used to generate PCR-amplified probe templates for in situ hybridization. (XLSX)