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Table 1 Intact, non-functional (pseudogenes) and partial OR genes in one reptile and two bird species

From: A comparison of reptilian and avian olfactory receptor gene repertoires: Species-specific expansion of group γ genes in birds

  Intacta Pseudogenesb Partialc   
Species α γ γ-c θ Total α γ γ-c θ Total α γ γ-c θ Total Totald % intact OR genes (range)e
Green anole 1 108 0 1 110 0 42 0 0 42 0 4 0 0 4 156 72 (71;73)
Chicken 9 39 165 1 214 6 26 79 0 111 2 11 141 0 154 479 66 (45;77)
Zebra finch 2 3 128 1 134 3 4 214 0 221 0 3 195 0 198 553 38 (24;60)
  1. a A sequence is defined as "intact" if it possesses a full-length OR protein coding sequence that is at least 250 amino-acids long and has seven TM domains.
  2. b A sequence is defined as "pseudogene" if it possesses at least 1 premature stop codon and/or frameshift and/or has less than seven TM domains.
  3. c A sequence is classified as a partial gene if it is shorter than 250 amino-acids and contains at least one sequence gap on the flanking genomic region.
  4. d Numbers indicate the sum of intact genes, pseudogenes and partial genes.
  5. e The percentage of intact OR genes is calculated as the ratio of 100*intact genes/(intact genes + pseudogenes). Numbers in brackets indicate the proportion of intact OR genes assuming that all partial genes will turn out to be pseudogenes (first number) or intact OR genes (second number).