Analysis of the Avoidance of Palindromes and RS of Length 4 and 6 in Bacterial Genomes (Wilcoxon Tests)
| Bacteria | Length 4 | Length 6 | |||||
| Palindromes | RMS | Palindromes | RMS | ||||
| bias | O/E | bias | bias | O/E | bias | ||
| aepe | 0 | 0.78 | NA | 0 | 0.92 | NA | |
| aqae | — | 0.46 | NA | — | 0.63 | NA | |
| arfu | — | 0.48 | NA | — | 0.53 | NA | |
| basu | — | 0.41 | - | — | 0.58 | - | |
| bobu | — | 0.52 | NA | 0 | 0.89 | NA | |
| caje | — | 0.51 | NA | — | 0.66 | NA | |
| chpn | — | 0.43 | NA | 0 | 1.06 | NA | |
| chtr | — | 0.40 | NA | 0 | 1.12 | NA | |
| esco | — | 0.44 | 4* | — | 0.44 | — | |
| hain | — | 0.19 | - | — | 0.30 | - | |
| hepy | — | 0.45 | 0 | — | 0.46 | NA | |
| meja | — | 0.47 | 0 | — | 0.78 | NA | |
| meth | 0 | 1.05 | 0 | 0 | 0.88 | NA | |
| myge | — | 0.57 | NA | — | 0.76 | NA | |
| myle | 0 | 1.07 | NA | 0 | 0.88 | NA | |
| mypn | 0 | 0.78 | NA | — | 0.72 | NA | |
| mytu | 0 | 0.95 | NA | 0 | 0.90 | NA | |
| neme | — | 0.40 | 2* | — | 0.35 | 0 | |
| psae | — | 0.46 | NA | — | 0.63 | — | |
| pyab | 0 | 0.91 | NA | - | 0.83 | NA | |
| pyho | 0 | 0.93 | NA | 0 | 0.90 | NA | |
| ripr | — | 0.54 | NA | — | 0.73 | NA | |
| sysp | — | 0.62 | 5* | — | 0.41 | 0 | |
| thma | - | 0.67 | NA | - | 0.83 | NA | |
| trpa | - | 0.72 | 2* | - | 0.86 | NA | |
| urur | - | 0.70 | NA | 0 | 0.91 | NA | |
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Palindrome bias is the test that palindromes are more biased than the remaining words. O/E displays the ratio observed/expected of the mean rank of palindromes sorted by decreasing avoidance. RMS avoidance is the result of the Wilcoxon test that RS are more biased than the remained palindromes.
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Abbreviations: NA, unknown RMS on the species; n*, rank of the sole RS known in the species for 4-palindromes (not enough elements for nonparametric statistics); —, underrepresentation (P-value <0.001); -, underrepresentation (P-value <0.05); 0, no bias. See Methods for species abbreviations.











