tag:blogger.com,1999:blog-7785493.post8332000456193729553..comments2024-01-04T04:11:55.717+02:00Comments on Dienekes’ Anthropology Blog: Austronesian spread across IndonesiaDienekeshttp://www.blogger.com/profile/02082684850093948970noreply@blogger.comBlogger4125tag:blogger.com,1999:blog-7785493.post-84535917402108859602014-08-14T16:01:08.628+03:002014-08-14T16:01:08.628+03:00Why does it have such a different conclusion from ...Why does it have such a different conclusion from the 2008 paper which I found persuasive http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2408594/#!po=22.0000 ???Anonymoushttps://www.blogger.com/profile/16061565028843090890noreply@blogger.comtag:blogger.com,1999:blog-7785493.post-72185660423070524112012-03-24T08:52:32.439+02:002012-03-24T08:52:32.439+02:00" admixture began about 4,000 y ago "???..." admixture began about 4,000 y ago "????<br /><br />Does this mean there was only very small amount of mating going on between Austronesian and Papuans? 4000 years ago is an extremely long time. The population of East Indonesia was not even 500,000 by the time of 1800's. Which leads me to think that only around 10,000 Austronesians and Papuan mated in 2000BC while their descendants of millions of people population of East indonesia is attribute to the result of Genetic drift hybrid population by self intermixing. ( As we all know Hybrids inherit Y-DNA and mtDNA from their fathers and mothers)<br /><br />I'm surprised this dated 4000 years ago. From what we know The East Indonesian have 70-80% Austronesian mtDNA with 10-20% Austronesian Y-DNA, 60-70% Papuan Y-DNA and 20-30% Papuan mtDNA. This obviously suggest more mating between Papuan men and Austronesian women. The question is how many exactly mated?MasterBoyhttps://www.blogger.com/profile/05116351276222734924noreply@blogger.comtag:blogger.com,1999:blog-7785493.post-4276725253455070352012-03-11T01:36:19.901+02:002012-03-11T01:36:19.901+02:00"Although the Austronesian expansion had a ma..."Although the Austronesian expansion had a major impact on the languages of Island Southeast Asia, controversy still exists over the genetic impact of this expansion". <br /><br />There hasn't been much controversy on the subject in this part of the world. Although a few make claims of pre-Polynesian 'Celtic' arrivals here. I have a book published in 1984 that is in complete agreement with all the processes and dates given in this paper. Of course it is nice to have yet more evidence in favour of what has been assumed for years. <br /><br />"the genetic admixture between populations of Asian vs. Papuan ancestry in Eastern Indonesia. Analyses of two genome-wide datasets indicate an eastward progression of the Asian admixture signal in Eastern Indonesia beginning about 4,000–3,000 y ago" <br /><br />I have had a few arguments in the past with those who maintain there was no southward Mongoloid movement involved. They claimed the Austronesian phenotype has always existed in SE Asia. I won't hold my breath waiting for any of them to admit they were wrong.terrythttps://www.blogger.com/profile/17327062321100035888noreply@blogger.comtag:blogger.com,1999:blog-7785493.post-7062931469893898312012-03-10T18:17:39.153+02:002012-03-10T18:17:39.153+02:00Thanks for posting! The studies of autosomal genet...Thanks for posting! The studies of autosomal genetic variations in this corner of the world are lagging behind, im my impatient opinion. As 1000 Genomes expand to SE and S Asia, the Pacific Islands remain in the shadows (and since parts of the region yielded strong migration flows into the US, the paucity of knowledge impacts medical applications of genetics). <br /><br />But my real question is about what's described as Bayesian dating. Strictly speaking, Bayes applies only to homogeneous systems, and the heterogeneity of language development has been one of the main points of the critics of the old glottochronology. We've worked on post-Bayesian statistics in heterogeneous sets. To some degree the known sources of heterogeneity may be mitigated, but it isn't trivial, and one always needs to validate the results e.g. by using various partial subsets of the data. Do you know how the linguists approached this issue?MOCKBAhttps://www.blogger.com/profile/05150628026789690963noreply@blogger.com