Table 2.
Polymorphism analysis of the chikungunya E1 sequences.
| Genotype | N | h | S | η | π | θ | ηs | ηp | Ka/Ks | Tajima’s D | Fu & Li’s D* | Fu & Li’s F* |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ECSA | 6 | 5 | 27 | 27 | 0.01719 | 0.01480 | 5 | 22 | 0.082 | 1.01925 | 1.11048 | 1.19180 |
| ECSA-IOL | 10 | 8 | 10 | 11 | 0.00292 | 0.00487 | 9 | 1 | 0.030 | -1.79074* | -1.93522 | -2.13705 |
| Asian | 7 | 6 | 25 | 25 | 0.01109 | 0.01277 | 16 | 9 | 0.070 | -0.74824 | -0.56450 | -0.61115 |
| Asian-Pacific | 98 | 50 | 64 | 65 | 0.00845 | 0.01579 | 30 | 34 | 0.036 | -1.50497 | -3.25593* | -3.04089** |
*Significant at 0.05.
**Significant at 0.02.
N, Number of samples; h, Number of haplotypes; S, Number of polymorphic sites; η, (Eta) Number of mutations; π, (Pi) Polymorphism at the nucleotide level; θ, (Theta) Watterson estimator of polymorphism (from Eta); ηs, Number of singletons; ηp, Number of parsimony significant sites.