Fig. 5.

Admixture proportion and introgressive tracts in ancient Judean and modern North African date palms. (A) f₄-ratio statistic, indicating the fraction of P. theophrasti genomes found in the test sample and calculated as f₄(A,O; X,C)/f₄(A,O; B,C), where X is the test sample; A is a sister species, namely P. sylvestris; (B and C) are the mixing populations, namely West Asian date palms and P. theophrasti, respectively; and O is the outgroup, that is, P. reclinata. The same analysis with Phoenix canariensis as the outgroup is in SI Appendix, Fig. S10. (B) Introgressive tract count in each North African (yellow) and ancient Judean (pink) date palms. (C) Average introgression tract length in North African and ancient Judean date palms.