marginal significanceP > 1 × 10 −6
However, this may be due to a difference in the linkage phase between the imputed alleles and causal mutations in each of the breeds, as the marginal significance of SNP ( P > 1 × 10 −6 ) just upstream of this QTL in the CH and LM populations does suggest that a QTL extending from the 57.9 to 58.2 Mb on BTA18 influences DCD in multiple breeds, albeit to a different extent.