Fig. 9From: 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 MTHFR C677T 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 MTHFR C677T in six Mexican Mestizo groupsBack to article page