Table 4. The frequency distribution of SNPs combination of dhfr alleles.
| dhfr haplotypes | Total (n = 168) | Location | |
| Hailakandi (97) | North Lakhimpur (71) | ||
| ACNCNI | 3 (1.8) | 2 (2.1) | 1 (1.4) |
| ACNRNI | 108 (64.3) | 67 (69.1) | 41 (57.7) |
| VCNRNI | 2 (1.2) | 2 (2.1) | 0 |
| ACIRNI | 31 (18.5) | 18 (18.6) | 13 (18.3) |
| ACNCNL | 2 (1.2) | 0 | 2 (2.8) |
| ACNRNL | 19 (11.3) | 6 (6.2) | 13 (18.3) |
| ACIRNL | 3 (1.8) | 2 (2.1) | 1 (1.4) |
Allelic combinations are in order of A16V, C50R N51I, C59R, S108N and I164L where bold and underlined allele denotes mutations. Values within bracket are the percentage of occurrences.