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Aboriginal Australian mitochondrial genome variation

Aboriginal Australian mitochondrial genome variation – an increased understanding of population antiquity and diversity
Abstract
Aboriginal Australians represent one of the oldest continuous cultures outside Africa, with evidence indicating that their ancestors arrived in the ancient landmass of Sahul (present-day New Guinea and Australia) ~55 thousand years ago. Genetic studies, though limited, have demonstrated both the uniqueness and antiquity of Aboriginal Australian genomes. We have further resolved known Aboriginal Australian mitochondrial haplogroups and discovered novel indigenous lineages by sequencing the mitogenomes of 127 contemporary Aboriginal Australians. In particular, the more common haplogroups observed in our dataset included M42a, M42c, S, P5 and P12, followed by rarer haplogroups M15, M16, N13, O, P3, P6 and P8. We propose some major phylogenetic rearrangements, such as in haplogroup P where we delinked P4a and P4b and redefined them as P4 (New Guinean) and P11 (Australian), respectively. Haplogroup P2b was identified as a novel clade potentially restricted to Torres Strait Islanders. Nearly all Aboriginal Australian mitochondrial haplogroups detected appear to be ancient, with no evidence of later introgression during the Holocene. Our findings greatly increase knowledge about the geographic distribution and phylogenetic structure of mitochondrial lineages that have survived in contemporary descendants of Australia’s first settlers.


http://www.nature.com/articles/srep43041#author-information
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澳洲还是古老的根部分支,没有什么晚期的交流。
我的看法,澳洲土著的E.E.成分的确很接近E.E.的根部,不过很早就混了一种奇特的成分--- 一种混有早期xOoA成分的丹人成分。
我有一个形象的说法:他们是开路者,他们是清道夫,他们是头啖汤的享受者,以至于后来的东欧亚人群都无法享受到那么多的亚洲丹人成分了,呵呵~
物格而后知至,知至而后意诚,意诚而后心正,心正而后身修,身修而后家齐,家齐而后国治,国治而后天下平...
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