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Table 2 Mann-Whitney U Tests of the most frequent nucleotide in the HH region versus NHH region (Approach 2 see Methods).

From: Phylogenetic footprinting of non-coding RNA: hammerhead ribozyme sequences in a satellite DNA family of Dolichopodacave crickets (Orthoptera, Rhaphidophoridae)

Regions compared

Double-hammerhead (68 bp)

Single-hammerhead (49 bp)

The HH region versus the NHH region

p = 0.001 n1 = 429 n2 = 68 Z = -3.214

p = 0.142 n1 = 448 n2 = 49 Z =- 1.469

The stems of the HH region versus the NHH region

p = 0.006 n1 = 429 n2 = 35 Z = -2.762

p = 0.026 n1 = 28 n2 = 448 Z = -2.226

The loops of the HH region versus the NHH region

p = 0.801 n1 = 429 n2 = 33 Z = -0.252

p = 0.281 n1 = 21 n2 = 448 Z = -1.078

The stems of the HH region versus the loops of the HH region

p = 0.064 N1 = 35 n2 = 33 Z = -1.854

p = 0.457 n1 = 28 n2 = 21 Z = -0.743