The McDonald-Kreitman test on individual miRNAs of the miR-982s cluster.

D (for divergence) is the number of fixed differences between D.melanogaster and D.simulans and P is the number of polymorphic sites (P) within species.aThe consensus sequence of dsi-miR-982a/b/c is used as the outgroup of dme-miR-982.bdme-miR-982 is used as the outgroup of dsi-miR-982a/b/c.cdme-miR-2582-like is used as the outgroup of dsi-miR-2582a/b.dFisher's exact test was performed against neighboring site.*, p**p***p