Figure 1. Estimating the frequency of highly-susceptible TMEM154 alleles in global sheep populations.
The ācā allele of SNP OAR17_5388531 is in linkage disequilibrium with the āgā nucleotide allele in codon 35 (gaa) of TMEM154. Genotypes for OAR17_5388531 were derived from the ISGC ovine SNP50k data set [11]. Numbers in parentheses for each breed group indicate the number of animals genotyped. The 11 breed groups with asterisks were genotyped for TMEM154 E35 by Sanger sequencing [9] and were included for comparison with the 74 ISGC breed groups.