Deletion and Insertion Profile in Tetraodontid (Smooth) and Diodontid (Spiny) Puffers
| Tetraodontidae | Diodontidae | Significance | |
| Ratio of deletions to point substitutions | 0.04 (0.026–0.063) | 0.06 (0.044–0.079)[i] | NS[ii] |
| Ratio of insertions to point substitutions | 0.03 (0.017–0.049) | 0.03 (0.018–0.043) | NS |
| Average deletion size (bp) | 19.8 | 19.1 | NS |
| Average insertion size (bp) | 2.7 | 2.6 | NS |
| Deletion bias (base pairs lost/substitution)[iii] | 0.7 | 1.1 | NS |
[i] Numbers in parentheses are 95% confidence intervals estimated by bootstrapping.
[ii] Not statistically significant.
[iii] Defined as (deletion rate) × (average deletion size) − (insertion rate) × (average insertion size).