tag:blogger.com,1999:blog-7785493.post3193534982972167149..comments2024-01-04T04:11:55.717+02:00Comments on Dienekes’ Anthropology Blog: Y-haplogroup Q and Native American origins (Regueiro et al. 2013)Dienekeshttp://www.blogger.com/profile/02082684850093948970noreply@blogger.comBlogger6125tag:blogger.com,1999:blog-7785493.post-79498503829559759852013-01-08T21:10:52.024+02:002013-01-08T21:10:52.024+02:00@ pconroy
Something else. The M346 Y chromosomes ...@ pconroy<br />Something else. The M346 Y chromosomes in the Americas were not tested for L54. I guess the authors wanted to highlight that fact.G Horvathttps://www.blogger.com/profile/09821897990245113279noreply@blogger.comtag:blogger.com,1999:blog-7785493.post-63689806044150200892013-01-07T21:42:02.233+02:002013-01-07T21:42:02.233+02:00Why is Q1a3-M346 given 2 different colors:
1. Gree...Why is Q1a3-M346 given 2 different colors:<br />1. Green in Central Asia<br />2. Maroon in Peru/Ecuador<br /><br />Error or something else??pconroyhttps://www.blogger.com/profile/10312469574812832771noreply@blogger.comtag:blogger.com,1999:blog-7785493.post-73717892267249946242013-01-07T21:02:40.265+02:002013-01-07T21:02:40.265+02:00aeolius,
If these groups were travelling by boat ...aeolius,<br /><br />If these groups were travelling by boat along the coast, they could get to Monte Verde quickly and would indeed have no need to acclimatize to the tropical/sub-tropical conditions along the way.<br /><br />IIRC, there is a disease found in South Americans from Peru that has also been found in Japan, where it is passed from mother-to-child through breast milk... I'll have to search for the specific disease again...pconroyhttps://www.blogger.com/profile/10312469574812832771noreply@blogger.comtag:blogger.com,1999:blog-7785493.post-50712498567905550012013-01-07T06:56:52.412+02:002013-01-07T06:56:52.412+02:00Monte Verde is such an inconvenient truth.
I just ...Monte Verde is such an inconvenient truth.<br />I just have never seen a good account of that intercontinental 8000 mile trek. And North to South across a variety of climate etc zones, no need to acclimatize,adapt hunting etc practices to changing environment. And get to Monte Verde a thousand years earlier.<br />Sturdy folks these first americansaeoliushttps://www.blogger.com/profile/09528717028785728695noreply@blogger.comtag:blogger.com,1999:blog-7785493.post-50896065306133072692013-01-07T03:58:28.329+02:002013-01-07T03:58:28.329+02:00Its not only the pedigree/effective issue when it ...Its not only the pedigree/effective issue when it comes to choosing what mutation rates to use, although that is a big chunk of the disparity in TMRCA computations, but it is also how many and which markers you use in addition to whether one is using marker specific or average rates, if you especially use marker specific rates for each marker you are analyzing then the number of markers and how they combine with each other will have a tremendous impact on the final TMRCA, for instance, for the 49 markers I usually use, Chandler has an average rate of 0.0022953, whereas Burgarella_Navascues has an average rate of 0.0022771, close enough, but when you use the actual marker specific rates to compute TMRCA, you almost always get drastically different dates for the SAME dataset, sometimes by almost 100 generations depending which haplogroup is being analyzed, this is further then exasperated by the quantity and marker combination one would choose for any further analysis. <br />Why don't we have a clear and peer reviewed study for all of this? Nobody can really take any of these dates, in absolute terms, seriously until we do.Anonymoushttps://www.blogger.com/profile/06247500186976801582noreply@blogger.comtag:blogger.com,1999:blog-7785493.post-13829945258288139882013-01-07T01:49:55.340+02:002013-01-07T01:49:55.340+02:00It is unfortunate that this study is not accompani...It is unfortunate that this study is not accompanied by an autosomal study.<br /><br />Tishkoff el al. (Africans and African Americans) and others have shown that Y-chromosome studies are not always good proxies to make region of origin conclusions on populations.<br /><br />Given the small number of source populations studied, as well as the fact that the paper is y-chromosome only, I find the statements in the abstract of this paper to be over reaching.<br /><br />Marniehttps://www.blogger.com/profile/10850856778953207810noreply@blogger.com