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Table 1 Summaries of retrocopies reside in the five Caenorhabditis nematodes

From: Evolutionary patterns of RNA-based gene duplicates in Caenorhabditis nematodes coincide with their genomic features

Species N(r) N(i) N(f) N(s) N(f & s) N (0.5)
C. brenneri 43 28 12 1 2 29
C. briggsae 48 35 11 0 2 36
C. elegans 43 37 5 1 0 32
C. japonica 9 4 3 0 2 3
C. remanei 42 24 11 2 5 23
  1. N (r): Number of retrocopies; N(i): Number of intact retrocopies; N(f): Number of frameshift retrocopies; N(s): Number of retrocopies have premature stop codons; N(f & s): Number of retrocopies both have frameshifts and premature stop codons; N (0.5): Number of retrocopies have omega values (between them and corresponding parental genes) less than 0.5 significantly.