Table 2.
χ2 and Fisher’s exact test significance results on the position-specific properties for conserved and species-specific miRNA–mRNA interactions in A. thaliana. The contribution of specific properties, such as mismatch (MM), G:U pair and gap is assessed using Fisher exact tests. The first position and the 8–10 nt region (which is important for inducing cleavage) are either significant or marginally significant, indicating a potential divergence in the type of interactions of either conserved or species-specific miRNAs
| χ2 | MM | G:U | Gap | |
|---|---|---|---|---|
| 1 | 0.00 | 0.08 | 0.01 | 1.00 |
| 2 | 0.58 | 1.00 | 0.36 | 0.72 |
| 3 | 0.71 | 1.00 | 0.62 | 1.00 |
| 4 | 0.13 | 1.00 | 0.06 | 1.00 |
| 5 | 0.02 | 0.03 | 0.11 | 0.99 |
| 6 | 0.71 | 0.99 | 0.27 | 0.99 |
| 7 | 0.77 | 1.00 | 0.43 | 1.00 |
| 8 | 0.01 | 0.00 | 1.00 | 1.00 |
| 9 | 0.34 | 0.11 | 0.53 | 0.99 |
| 10 | 0.18 | 0.11 | 0.21 | 0.99 |
| 11 | 0.56 | 0.43 | 0.62 | 1.00 |
| 12 | 0.76 | 0.49 | 0.99 | 1.00 |
| 13 | 0.10 | 0.25 | 0.10 | 1.00 |
| 14 | 0.02 | 0.00 | 1.00 | 0.68 |
| 15 | 0.99 | 1.00 | 0.99 | 1.00 |
| 16 | 0.00 | 0.00 | 0.00 | 1.00 |
| 17 | 0.36 | 0.48 | 0.43 | 0.27 |
| 18 | 0.59 | 0.74 | 0.49 | 0.62 |
| 19 | 0.42 | 0.19 | 0.68 | 1.00 |
| 20 | 0.10 | 0.04 | 0.59 | 1.00 |
| 21 | 0.00 | 0.00 | 0.81 | 1.00 |