Table 2.

Structural similarities among metazoan minor pre-snRNAs

pre-u11	0.63
pre-u12	0.58
pre-u4atac	0.48

Pairwise similarities of best representative suboptimal structures averaged for individual metazoan minor pre-snRNAs. Note that the less is the number, the higher is the structure similarity, as the similarity was computed using tree edit distances. Two-sample two-tail t-test compared metazoan major (see Table 1) and minor similarities with a p-value = 0.0077, showing that their dissimilarity was significant which indicated that if metazoan major had structure similarity, metazoan minor should have structure dissimilarity.

Statistically comparison of protists and fungi major (see Table 1) and metazoan minor similarities yielded a p-value = 0.0621, showing that their dissimilarity was insignificant which indicated that if fungi an protist major had structure dissimilarity, metazoan minor should have also structure dissimilarity.