Latin - Mexican Folk Art Craft

Mexican Amate Bark Paintings and other Paintings

Amate Bark Painting - Mexican Folk Art

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Amate Bark Painting -  Mexican Folk Art
Posted by mexicanfolkart on December 11, 2008 Full Size| Slideshow

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Reply Figured
9:33 AM on January 8, 2014 
"You are in a misunderstanding, Gioello". Not raelly. Sure, Q and R are simply two versions of P* (amoung many). But we know that all these P*s descend from just one single ancestor, who must have lived in a particular place. His descendants have subsequently become widely spread around the world, especially through the Northern Hemisphere. And further back P shares a single ancestor with NO. To expand on this idea: most of these individual P* haplogroups are nowhere near as numerous, or as widely spread, as are just two of them, Q and R. That's precisely why these two haplogroups have been assigned letters. So it does seem that, as the population containing P's descendants expanded, different versions of the Y-chromosome became concentrated in different regions within the expansion. But ultimately the expansion become confined to just Q and R: basically Q to the east of the Aral Sea and R to the west and south. Several versions of P* may have accompanied them some of the way, but they seem to have eventually been left behind. However we struggle to find any Y-chromosome haplogroups other than P involved in the relevant expansion. Perhaps T and, less likely, IJ and G. But it will be less complicated if we ignore these, at least for now. Anyway R expanded around much of Western Eurasia and even into Africa. As you are well aware R has in turn periodically produced other haplogroup expansions derived from the single original R. Interestingly Q is not very common south of the Central Asian mountains, such as the Altai and the complex of mountains south of Lake Baikal. So Q may have reached America through a route north of this region. Makes sense. Perhaps they were hindered in any movement south of this region by the presence of Y-hap C, and P's relations N and O. Subsequent expansions north of these Y-haps have reduced the proportion of Y-hap Q in populations along the route from Central Asia to America.