Fig. 7From: Geographical and ethnic distribution of single nucleotide polymorphisms within genes of the folate/homocysteine pathway metabolism a Comparative frequency of the risk allele homozygotes for MTRR A66C in the studied populations (*P value >0.0001 and <0.05, **P value <0.0001 for significant differences in genotype frequencies), b minor allele frequency of MTRR A66C in six Mexican Mestizo groupsBack to article page