Fig. 1

Agarose gel picture illustrating the different A118G genotypes identified by RFLP using the Bst UI restriction enzyme. Column 1 is a 100 bp marker, column 2 shows a sample homozygote for the mutant G118 allele, column 3 shows a sample heterozygote for the A118G SNP and columns 4–8 are samples heterozygous for the wild-type A118 allele