tag:blogger.com,1999:blog-7785493.post5152454747425291834..comments2024-01-04T04:11:55.717+02:00Comments on Dienekes’ Anthropology Blog: Genetic structure of Italian populationDienekeshttp://www.blogger.com/profile/02082684850093948970noreply@blogger.comBlogger6125tag:blogger.com,1999:blog-7785493.post-52585289615980832722012-09-27T08:50:07.979+03:002012-09-27T08:50:07.979+03:00The finding that central Italy is closer to the no...The finding that central Italy is closer to the north is probably just an artifact of the big number of Tuscans included. From what I've read here, Tuscans are closest to north Italians, but the Central_Italian_D sample from Dodecad, which doesn't include Tuscans, seems rather bipartite: About one third clusters with Tuscans/the north, whereas the other two thirds are closer to southern Italy, Sicily in particular, and in international comparison to Greece. I suppose the former rather include people from northern Latium or other regions bordering Tuscany, while the latter are presumably more from the other side of the apennine, where y-haplogroup J2 plays a more important role.<br /><br />I found it interesting, though, that Emilia-Romagna clusters rather with central Italy than with the north, with one individual close to a Marche individual.SimonWhttps://www.blogger.com/profile/05915003431050999048noreply@blogger.comtag:blogger.com,1999:blog-7785493.post-85019244600075036372012-09-18T09:32:45.528+03:002012-09-18T09:32:45.528+03:00I think these proportions are pretty new and very ...<i>I think these proportions are pretty new and very distinct from the general picture so far.</i><br /><br />An ADMIXTURE analysis with 10 populations? I see little added value in it. There are now 100s of population samples publicly available.Dienekeshttps://www.blogger.com/profile/02082684850093948970noreply@blogger.comtag:blogger.com,1999:blog-7785493.post-6130033152455748022012-09-17T23:32:49.721+03:002012-09-17T23:32:49.721+03:00Di Gaetano:
'The HapMap CEU individuals showed...Di Gaetano:<br />'The HapMap CEU individuals showed an average Northern Europe (NE) ancestry (light green) of 83%. A similar pattern is observed in French, Northern Italian and Central Italian populations with a NE ancestry of 70%, <b>56% and 52%</b> respectively (Figure 3). According to the PCA plot, also in the ADMIXTURE analysis there are relatively small differences in ancestry between Northern Italians and Central Italians while Southern Italians showed a lower average admixture NE proportion (<b>43,6%</b>) than Northern and Central Italy, and a higher Middle East ancestry (light blue) of <b>28%</b>.'<br />[...]<br />'The average admixture proportions for Northern European ancestry within current Sardinian population is <b>14.3%</b>'<br /><br />I think these proportions are pretty new and very distinct from the general picture so far. The conclusions are all mine.Rokushttps://www.blogger.com/profile/13883125231922541439noreply@blogger.comtag:blogger.com,1999:blog-7785493.post-36385985510081573972012-09-17T18:02:16.775+03:002012-09-17T18:02:16.775+03:00I have no idea what you're talking about.I have no idea what you're talking about.Dienekeshttps://www.blogger.com/profile/02082684850093948970noreply@blogger.comtag:blogger.com,1999:blog-7785493.post-47290351522313155512012-09-17T17:30:38.890+03:002012-09-17T17:30:38.890+03:00"I don't see much that is new here"
..."I don't see much that is new here"<br /><br />To you this should be new. Ötzi reduced the South European component to near inexistence. Italy, instead of being "South European", it is actually 56% North European in the north and close to 50% NE in the south, while the West Asian component is a lot lower. Even Sardinia is nowadays 14% NE.<br />I think you should remove "Mediterranean" from your component list altogether and put Ötzi instead. Then, behold how the Indo european world looks like.<br />Kurganists and Neolithic Orientalists are all wrong, the true genetic relation of IE is with Mesolithic northern Europe, that started to expand about 4400 BC.Rokushttps://www.blogger.com/profile/13883125231922541439noreply@blogger.comtag:blogger.com,1999:blog-7785493.post-50603989121678803852012-09-15T23:14:39.515+03:002012-09-15T23:14:39.515+03:00I agree. Pretty darn close to worthless.
1. A...I agree. Pretty darn close to worthless. <br /><br />1. As you noted, they do not use extant Balkan data, which could have been highly informative.<br /><br />2. They don't distinguish between micro-regions within Italy, which exist because of the mountainous terrain. (Although this would be asking a lot, I suppose). Still, Molise and Cosenza have very different genetics than Lazio and Reggio Calabria, for example.<br /><br />3. They note southern affinities to certain Near Eastern populations, but they don't speculate as to why. Southern Italians made up the bulk of Roman legionnaires from c. 200 BC to c. 200 AD. Was it historic gene flow from Southern Italy to those locales? Or was it prehistoric gene flow from the first farmers TO Italy?<br /><br />Ah, maybe next time.mooreisbetterhttps://www.blogger.com/profile/17522884275516185288noreply@blogger.com