Figure 1

Distribution of insertion lengths and consecutive substitutions within gene families. A) Consecutive base substitutions demonstrate that single base substitutions are the primary size class, consisting of 90% of all substitutions which reduce in number rapidly. The largest consecutive stretch of substitutions was 12. B) Insertion lengths in terms of percent of the total number of insertion events are shown. Insertion lengths demonstrate excess insertions of lengths 3, 6, and 9 bases however, the largest size class is single base Insertions which compose 58% of all insertion events. The data shown is for insertions less than 16 bases in length.