منابع مشابه
Melanesian mtDNA Complexity
Melanesian populations are known for their diversity, but it has been hard to grasp the pattern of the variation or its underlying dynamic. Using 1,223 mitochondrial DNA (mtDNA) sequences from hypervariable regions 1 and 2 (HVR1 and HVR2) from 32 populations, we found the among-group variation is structured by island, island size, and also by language affiliation. The more isolated inland Papua...
متن کاملMelanesian and Asian origins of Polynesians: mtDNA and Y chromosome gradients across the Pacific.
The human settlement of the Pacific Islands represents one of the most recent major migration events of mankind. Polynesians originated in Asia according to linguistic evidence or in Melanesia according to archaeological evidence. To shed light on the genetic origins of Polynesians, we investigated over 400 Polynesians from 8 island groups, in comparison with over 900 individuals from potential...
متن کاملMelanesian origin of Polynesian Y-chromosomes
BACKGROUND Two competing hypotheses for the origins of Polynesians are the 'express-train' model, which supposes a recent and rapid expansion of Polynesian ancestors from Asia/Taiwan via coastal and island Melanesia, and the 'entangled-bank' model, which supposes a long history of cultural and genetic interactions among Southeast Asians, Melanesians and Polynesians. Most genetic data, especiall...
متن کاملHaemophilus influenzae pneumonia in Melanesian adults: report of 15 cases.
In a prospective study of 170 adult patients with acute pneumonia, Haemophilus influenzae was found to be the aetiological agent in 15 cases (8.8%). The diagnosis in all cases was based on positive cultures of blood or percutaneous lung aspirate, or both. Chronic lung disease was significantly more common in patients with H influenzae pneumonia than in patients with pneumonia due to other organ...
متن کاملAncient mtDNA Genetic Variants Modulate mtDNA Transcription and Replication
Although the functional consequences of mitochondrial DNA (mtDNA) genetic backgrounds (haplotypes, haplogroups) have been demonstrated by both disease association studies and cell culture experiments, it is not clear which of the mutations within the haplogroup carry functional implications and which are "evolutionary silent hitchhikers". We set forth to study the functionality of haplogroup-de...
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ژورنال
عنوان ژورنال: PLoS ONE
سال: 2007
ISSN: 1932-6203
DOI: 10.1371/journal.pone.0000248