Table 3.
Chi-squared analysis of the linkage between point mutations and type A and B introns located between exons 20 and 21 on VGSC reported in Aedes aegypti from Jeddah, Saudi Arabia and homologous sequences retrieved from the GenBank from other geographic regions
| Point mutations | Geographic regions | χ 2 | df | P-value | |
|---|---|---|---|---|---|
| 1016 | 982 | Jeddah | 22.000 | 2 | 0.000 |
| 989 | Jeddah | 44.000 | 4 | 0.000 | |
| Global | 49.910 | 4 | 0.000 | ||
| 1534 | Jeddah | 15.402 | 4 | 0.004 | |
| Global | 16.297 | 4 | 0.003 | ||
| Intron type between exons 20 and 21 | 1016 | Jeddah | 22.000 | 2 | 0.000 |
| Global | 34.333 | 2 | 0.000 | ||
| 1534 | Jeddah | 11.746 | 2 | 0.003 | |
| Global | 18.005 | 2 | 0.000 |