genetIc linkage mapping We genotype the six members of the family for SSrs scattered throughout the genome(which spans 3300 CM) one SSR must be within 10 cM of the Huntington's gene HD SSR12 SSR112 SSR31 SSR37 SSR5 20 CM20 cM SSR12 SSR112 SSR31 SSR37 SSR5 genetic linkage mapping We genotype the six members of the family for SSRs scattered throughout the genome (which spans 3300 cM)— one SSR must be within 10 cM of the Huntington's gene: HD ?