tag:blogger.com,1999:blog-7785493.post9201264884131985786..comments2024-01-04T04:11:55.717+02:00Comments on Dienekes’ Anthropology Blog: Cranial robusticity in AustraliansDienekeshttp://www.blogger.com/profile/02082684850093948970noreply@blogger.comBlogger7125tag:blogger.com,1999:blog-7785493.post-57901869863823162702008-12-09T05:53:00.000+02:002008-12-09T05:53:00.000+02:00If it can be shown that C5, rather than C*, is the...If it can be shown that C5, rather than C*, is the basal haplogroup this would provide evidence supporting the southern coastal route. As it stands we can only say that C* seems to hve originated around what would have been a virtually land-locked South China Sea at times of low sea level. How it got there is anyone's guess (spaceship?). The other C haplogroups, including C5, at present seem to result from a series of expansions from that region.terrythttps://www.blogger.com/profile/17327062321100035888noreply@blogger.comtag:blogger.com,1999:blog-7785493.post-76113917107034839832008-12-08T18:54:00.000+02:002008-12-08T18:54:00.000+02:00terryt said,"Even the fundamental divisions are un...terryt said,<BR/><BR/>"Even the fundamental divisions are unknown. C* and C1-C6 all separated at the same time according to any diagram I've ever seen. And that's extremely unlikely to be the case."<BR/><BR/>Yes, that is the problem exactly. At least they have done enough work on haplogroup C to demonstrate that North/East Asians and Native Americans share the same subclade (C3-M217). None of the probable bifurcations in the phylogeny below haplogroup C-M130 and above subclades C1-M8 through C6-P55 has been resolved; all the subclades have been lumped together at the same taxonomical level. It's really a waste of a possibly enlightening source of information on the origins and migrational paths of a great number of modern human populations.Ebizurhttps://www.blogger.com/profile/16925110639823856429noreply@blogger.comtag:blogger.com,1999:blog-7785493.post-63710513368754467552008-12-08T18:40:00.000+02:002008-12-08T18:40:00.000+02:00This comment has been removed by the author.Ebizurhttps://www.blogger.com/profile/16925110639823856429noreply@blogger.comtag:blogger.com,1999:blog-7785493.post-17995865038601062652008-12-08T11:02:00.000+02:002008-12-08T11:02:00.000+02:00Thanks Ebizur. Even the fundamental divisions are...Thanks Ebizur. Even the fundamental divisions are unknown. C* and C1-C6 all separated at the same time according to any diagram I've ever seen. And that's extremely unlikely to be the case.terrythttps://www.blogger.com/profile/17327062321100035888noreply@blogger.comtag:blogger.com,1999:blog-7785493.post-69106336981031599702008-12-07T22:24:00.000+02:002008-12-07T22:24:00.000+02:00terryt said,"Resolving the Y-chromosome C tree wou...terryt said,<BR/><BR/>"Resolving the Y-chromosome C tree would reveal a great deal about our evolution."<BR/><BR/>That's definitely true. In the form of its various subclades, haplogroup C is the most important Y-DNA haplogroup of northeastern Eurasia, Polynesia, and Australia, and it has influenced to a greater or lesser extent all populations of Asia, the Americas, and Oceania. The distribution of Y-DNA haplogroup C is not just some fluke that can be ignored for the sake of preserving someone's pet theory. It is imperative that research on the internal phylogeny of haplogroup C be undertaken in order to elucidate the relationships among Asians, Americans, and Oceanians.Ebizurhttps://www.blogger.com/profile/16925110639823856429noreply@blogger.comtag:blogger.com,1999:blog-7785493.post-5568521155620145562008-12-07T08:15:00.000+02:002008-12-07T08:15:00.000+02:00I agree. For a start the researchers completely i...I agree. For a start the researchers completely ignore the fact that the greatest fossil difference occurs during widely separated periods. And they seem to automatically assume that just because only 'modern human' haplogroups survive other genes from nearby don't survive. <BR/><BR/>And then they claim the DNA proves a single migration. Au contraire. The haplogroup pattern can easily be interpreted as showing at least two movements. One possibility is that Y-chromosome C and mtDNA haplogroup N arrived first. Followed by Y-chromosome K, and mtDNA M along with her descendant Q, and a line that had broken off N in SE Asia (P). <BR/><BR/>On the other hand it's even possible Y-chromosome C arrived more recently, with the Austronesian expansion. The Y-chromosome took off through the local population, but their language, and most of their genes, were lost as the Y-chromosome spread. <BR/><BR/>Resolving the Y-chromosome C tree would reveal a great deal about our evolution.terrythttps://www.blogger.com/profile/17327062321100035888noreply@blogger.comtag:blogger.com,1999:blog-7785493.post-64420069534095908492008-12-07T00:09:00.000+02:002008-12-07T00:09:00.000+02:00Here we go again!The same old story!No mtDNA or Y-...Here we go again!<BR/>The same old story!<BR/>No mtDNA or Y-DNA archaic Homo strain evident doesn't mean that it wasn't any!<BR/>When these geneticists are going to understand that THE LACK OF EVIDENCE OF CLUES DOESN'T MEAN THE EVIDENCE OF LACK OF CLUES!!!<BR/>Liking it or not the mtDNA and Y-DNA are highly affected by natural selection!<BR/>Variation in STR, depth of mutations etc. could be affected by genetic drift, bottlenecks, random mutations, and other parameters!!!<BR/>From an anatomically way of view the Australian fossils show diverce phenotypes and it is clear that more than two elements combined in the initial polulation. Keilor for example,a Tasmanoid, is completely different than Coobool Creek fossils and the Willandra fossils are much more archaic than Mungo although being much younger chronologically!!!<BR/>I believe that with our current knowledge on the Genetic attributes of our DNA we can't exclude a possible archaic Homo admixture to the early African Homo Sapiens Sapiens immigrnats in Australia. Besides, if modern Aboriginals have archaic admixture or not is irrelevant with what the first polulation of the island had back then!Unknownhttps://www.blogger.com/profile/07781621903358782011noreply@blogger.com