Table 1.

Summary statistics for single nucleotide and allelic variation in IGHV and TRBV.

IGHVTRBV
Average bp difference per pairs of alleles4.1%5.0%
Average no. of SNPs per segment1.71.9
Fraction of novel alleles out of all observed alleles12/28 (43%)40/99 (40%)
  • The results tabulated are computed using the same set of 109 individuals and are restricted to the two-copy segments described in the text. To calculate the average base pair difference per pairs of alleles, for each segment, we computed the average base pair difference between all pairs of alleles, and then averaged over all segments.