Figure 5.
Hypothesized chronology of the early evolution of the M. tuberculosis Beijing genotype superimposed onto human prehistoric migrations and NRY based phylogeography (Underhill et al. 2001). Arrows indicate human migrations. In bold are human haplogroups and mutations according to the NRY hierarchical nomenclature system (Y Chromosome Consortium 2002). Bj indicates Beijing genotype defined by specific signature of the DR locus (absence of spoligosignals 1-34) (Bifani et al. 2002; Glynn et al. 2002); Kya, thousand years ago.
