Y-Chromosomal Haplogroups Identified in Lebanese Subpopulations The phylogenetic tree defined by the markers used is shown on the left, and the haplogroup names are given in the middle. Nomenclature is based on the 2003 YCC tree9, with departures indicated by “/-”. The absolute number of chromosomes within each haplogroup in the entire sample is shown in the “Lebanon” column, and the relative frequency within each of the three religious groups is shown on the right by the relative sizes of the circles.