tag:blogger.com,1999:blog-3023805782808412230.post2420312798866452138..comments2024-03-09T15:46:44.638+01:00Comments on For what they were... we are: Mitochondrial DNA and 'molecular clock'Majuhttp://www.blogger.com/profile/12369840391933337204noreply@blogger.comBlogger5125tag:blogger.com,1999:blog-3023805782808412230.post-89052986337737706952011-07-01T10:35:31.901+02:002011-07-01T10:35:31.901+02:00"We can say this is the cannibal mum model......"We can say this is the cannibal mum model... though nobody had to actually eat anyone in reality, just 'daughter' lineages with novel mutations were systematically drifted out in most cases". <br /><br />That could turn out to be a useful term. <br /><br />"Instead where populations were very low, all lineages, novel or ancestral had similar chances of survival, so the effective mutation rate was increased instead". <br /><br />Yes. There is no need at all that the replacement of 'parent' haplogroups should be regular. I'm not at all surprised that the variation is so great. <br /><br />"As I often say: there is no genetic C-14 (nor anything of the like)". <br /><br />That's right. Haplogroups do not have a half-life.terrythttps://www.blogger.com/profile/17327062321100035888noreply@blogger.comtag:blogger.com,1999:blog-3023805782808412230.post-25427758000903900532011-06-30T03:16:13.923+02:002011-06-30T03:16:13.923+02:00Off topic:
Does anyone recall any references for ...Off topic:<br /><br />Does anyone recall any references for appearance of U3 at any Euro archeological sites, and how early?Joyhttps://www.blogger.com/profile/07024219782322596271noreply@blogger.comtag:blogger.com,1999:blog-3023805782808412230.post-79102061611212148602011-06-29T23:27:17.777+02:002011-06-29T23:27:17.777+02:00Notice anyhow, that mtDNA JT might still have arri...Notice anyhow, that mtDNA JT might still have arrived to Europe only with Neolithic expansion, because JT, J, T, J1, J2, etc. all must have coalesced in West Asia, not in Europe. <br /><br />But I believe <a href="http://forwhattheywereweare.blogspot.com/2011/05/more-ancient-mtdna-maps-of-europe.html" rel="nofollow">I have located</a> a JT(xJ,T) individual in Andalusian Solutrean (Nerja). But this is also somewhat uncertain, specially being a single isolated case. <br /><br />The first known J and T appear indeed in the Neolithic period in Central Europe (Moravia and East Germany for J, also Rhineland and South Tirol for T). But this again only means so much because our sampling is not dense enough to give a clear picture, specially in key areas like the Balcans, West Asia...Majuhttps://www.blogger.com/profile/12369840391933337204noreply@blogger.comtag:blogger.com,1999:blog-3023805782808412230.post-91604099596559228502011-06-29T23:20:18.495+02:002011-06-29T23:20:18.495+02:00That's the opinion of the authors, yes.
Pers...That's the opinion of the authors, yes. <br /><br />Personally I <a href="http://leherensuge.blogspot.com/2010/03/another-tentative-mtdna-chronology.html" rel="nofollow">suspect</a> that U5 might be 34 Ka old, maybe expanding with Gravettian and J2 28 Ka old. But that I gather using mtDNA H to calibrate at c. 40,000 years ago.<br /><br />It is all very tentative and uncertain. The important thing is to understand what all this means and not take these estimates as anything too serious. As I often say: there is no genetic C-14 (nor anything of the like).Majuhttps://www.blogger.com/profile/12369840391933337204noreply@blogger.comtag:blogger.com,1999:blog-3023805782808412230.post-65186945205190993652011-06-29T22:47:08.428+02:002011-06-29T22:47:08.428+02:00So, J2 could be paleolithic and U5, the "olde...So, J2 could be paleolithic and U5, the "oldest haplogroup in Europe, which arrived with the first modern europeans who met the neandertals" only 20.000 years old? <br /><br />I think this clock doesn't work too well.᧞eandertalerinhttps://www.blogger.com/profile/12545788589913543964noreply@blogger.com