A 2012 genetic study on Haitian Y-chromosomal ancestry has revealed that the population "exhibit a predominantly Sub-Saharan paternal component, with haplogroups A1b-V152, A3-M32, B2-M182, E1a-M33, E1b1a-M2, E2b-M98, and R1b2-V88" comprising (77.2%) of the Haitian paternal gene pools. Y-chromosomes indicative of European ancestry "(i.e., haplogroups G2a*-P15, I-M258, R1b1b-M269, and T-M184) were detected at commensurate levels at 20.3%,