Figure 4

The phylogenic relationship between bactrian camel and alpaca based on maximum likelihood analysis (without the control regions). To estimate the divergence time, cow and pig were taken as an ingroup calibration point, while the mouse and rat were taken as an outgroup calibration point. All nodes were supported by the bootstrap value (1000 replications) and posterior probability on the nodes (above the branch is the bootstrap value, and below the branch is posterior probability). The scale bar indicates 0.1 substitutions.