Data for Y-chromosome haplotypes in Fang and Bubi populations from Bioko (Equatorial Guinea)

[Genetic polymorphism of 17 Y-STR loci in four minority populations in Guangxi of China]

To investigate the genetic polymorphism of Y-chromosomal short tandem repeats (STR) loci in Jing, Yi, Yao, and Zhuang minority populations from Guangxi Province, China. 17 Y-STR loci were co-amplified using AmpFlSTR(R) Yfiler PCR Amplification Kit System, and the PCR products were analyzed by genetic analyzer. Cluster and phylogenic tree analyses were conducted to show the genetic distance among the populations. There were 61 different haplotypes in 100 unrelated Yao males, 67 in 105 unrelated Yi males, 79 in 103 unrelated Jing males, and 91 in 107 unrelated Zhuang males. The haplotype diversities of Jing, Yi, Yao and Zhuang were determined as 0.9784, 0.9866, 0.9911, and 0.9956, respectively. Among these 4 minority populations, the genetic distance between Jing and Zhuang was the smallest (0.0391), while the genetic distance between Yi and Yao was the largest (0.3376). The 17 Y-STR loci in the 4 minority populations from Guangxi Province revealed a highly polymorphic genetic distribution, which show a high potential for population genetics and forensic practice.

On the origins and admixture of Malagasy: new evidence from high-resolution analyses of paternal and maternal lineages

The Malagasy have been shown to be a genetically admixed population combining parental lineages with African and South East Asian ancestry. In the present paper, we fit the Malagasy admixture history in a highly resolved phylogeographic framework by typing a large set of mitochondrial DNA and Y DNA markers in unrelated individuals from inland (Merina) and coastal (Antandroy, Antanosy, and Antaisaka) ethnic groups. This allowed performance of a multilevel analysis in which the diversity among main ethnic divisions, lineage ancestries, and modes of inheritance could be concurrently evaluated. Admixture was confirmed to result from the encounter of African and Southeast Asian people with minor recent male contributions from Europe. However, new scenarios are depicted about Malagasy admixture history. The distribution of ancestral components was ethnic and sex biased, with the Asian ancestry appearing more conserved in the female than in the male gene pool and in inland than in coastal groups. A statistic based on haplotype sharing (D(HS)), showing low sampling error and time linearity over the last 200 generations, was introduced here for the first time and helped to integrate our results with linguistic and archeological data. The focus about the origin of Malagasy lineages was enlarged in space and pushed back in time. Homelands could not be pinpointed but appeared to comprise two vast areas containing different populations from sub-Saharan Africa and South East Asia. The pattern of diffusion of uniparental lineages was compatible with at least two events: a primary admixture of proto-Malay people with Bantu speakers bearing a western-like pool of haplotypes, followed by a secondary flow of Southeastern Bantu speakers unpaired for gender (mainly male driven) and geography (mainly coastal).