Code data and all COI sequences

To construct the phylogenetic tree form the 127 samples using their COI gene sequences along with all the 24 COI gene sequences reported in Sun et al.
We developed 10 demographic models (setting a single ancestral population) with only population split events or the combination of split and admixture events at the presence/absence of migration from Asian to the Americas and the Mediterranean populations (Supplementary Fig. 4a; see Methods). The scripts are organised as follows:Scripts are written in BASH, PYTHON, PERL and R and were developed and tested on Centos Linux v7.9. Other Linux distributions may be compatible but no testing has taken place in this regard. -Supplementary_fsc28_three_populations.sh: The shell of a complex demographic history analysis using fastSimcoal2 (ver 2.8.0.0 - 22.09.23).