|Title||J1-M267 Y lineage marks climate-driven pre-historical human displacements|
|Publication Type||Journal Article|
|Year of Publication||2009|
|Authors||Tofanelli, S, Ferri, G, Bulayeva, K, Caciagli, L, Onofri, V, Taglioli, L, Bulayev, O, Boschi, I, Alu, M, Berti, A, Rapone, C, Beduschi, G, Luiselli, D, Cadenas, AM, Awadelkarim, KD, Mariani-Costantini, R, Elwali, NE, Verginelli, F, Pilli, E, Herrera, RJ, Gusmao, L, Paoli, G, Capelli, C|
|Journal||European Journal of Human Genetics|
|Keywords||2010-09-18, climate, europe, holocene, migration, paleoclimate, West Asia, Y chromosome|
The present day distribution of Y chromosomes bearing the haplogroup J1 M267*G variant has been associated with different episodes of human demographic history, the main one being the diffusion of Islam since the Early Middle Ages. To better understand the modes and timing of J1 dispersals, we reconstructed the genealogical relationships among 282 M267*G chromosomes from 29 populations typed at 20 YSTRs and 6 SNPs. Phylogenetic analyses depicted a new genetic background consistent with climate-driven demographic dynamics occurring during two key phases of human pre-history: (1) the spatial expansion of hunter gatherers in response to the end of the late Pleistocene cooling phases and (2) the displacement of groups of foragers/herders following the mid-Holocene rainfall retreats across the Sahara and Arabia. Furthermore, J1 STR motifs previously used to trace Arab or Jewish ancestries were shown unsuitable as diagnostic markers for ethnicity.
J1-M267 Y lineage marks climate-driven pre-historical human displacements
For years, I've worked on their bones. Now I'm working on their genes. Read more about the science studying these ancient people.
From a finger bone of an ancient human came the record of a completely unexpected population. My lab is working on the science of the Denisova genome.
The advent of agriculture caused natural selection to speed up greatly in humans. We're uncovering some of the ways that populations have rapidly changed during the last 10,000 years.