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Table 3 Diversity of the Intron and Exon+

From: Extraordinary diversity among members of the large gene family, 185/333, from the purple sea urchin, Strongylocentrotus purpuratus

Sequence

Length

Nt Diversity

# Unshared Variations (%)1

% Variable Positions

# Unique Sequences

cDNA-based 2nd Exon

1695

0.0522

93 (5.5)

18.2

112

Intron

446

0.1752*

25 (5.6)

40.1*

52

Repeat-based 2nd Exon

1449

0.0556

102 (7.0)

21.3

112

  1. + Gaps were omitted from all calculations.
  2. 1 The percent of the total positions within the alignment that contain an unshared variation.
  3. * Indicates that the intron values were significantly different than the values for both the cDNA-based 2nd exon and the repeat-based 2nd exon (p < 0.05) based on a two-tailed t-test.