Table 4. Chromosomal organization of OR genes and subfamilies
Intact OR genes/locus* Subfamilies/locus Loci/subfamily
No. of OR genes No. of loci No. of subfamilies No. of loci No. of loci No. of subfamilies
0 2 1 16 1 225
1-10 30 2 8 2 15
11-20 7 3 6 3 1
21-30 5 4 5
36 1 5 1
45 1 6 5
52 1 9 1
57 1 10 3
91 1 11 1
107 1 14 1
189 1 36 1
50 1
  • * No. of OR gene loci with 0-189 intact OR genes.

  • No. of loci that encode members of 1-50 subfamilies.

  • No. of subfamilies whose members are encoded at one to three loci.