Corded Ware samples are nearly all R1a-M417. According to yfull, everyone with M417 descends from a single man who lived 3,500 BC.
But we have a North Ukrainian M417 sample dated to 4,000 BC. This means that either all of his descendants died out, or that he personally was paternal ancestor to all M417 people today. The culture in which he lived exhibit the first-known corded patterns on pottery. His autosomal DNA shows an almost perfect (96%) match with German Corded Ware - in fact, it is no different to German Corded Ware than German Corded Ware samples are to each other.
1. Is there any reason to think that the 4,000 BC ancestor to R1a-M417 Corded Ware was anyone other than the man in this sample or someone very much like him?
2. As there is no discernible change in autosomal DNA between 4,000 BC and the German Corded Ware period, and as nearly all Corded Ware yDNA is from the same M417 subclade of R1a, is there any reason to think there was any significant admixture with other people during this period of development leading up to full Corded Ware?
3. In particular, given that (i) almost all Yamnayan samples are from a different yDNA group (R1b-Z2103) and bear only a 65% match to the North Ukrainian and German Corded Ware samples, and (ii) Yamnaya only arose circa 3,300 BC (700 years after the closely-matching Ukrainian M417 man lived), is there any reason to think that German Corded Ware was derived from Yamnayan admixture to any significant degree, rather than by direct descendance from the community in North Ukraine in which the 4.000 BC M417 man lived?
But we have a North Ukrainian M417 sample dated to 4,000 BC. This means that either all of his descendants died out, or that he personally was paternal ancestor to all M417 people today. The culture in which he lived exhibit the first-known corded patterns on pottery. His autosomal DNA shows an almost perfect (96%) match with German Corded Ware - in fact, it is no different to German Corded Ware than German Corded Ware samples are to each other.
1. Is there any reason to think that the 4,000 BC ancestor to R1a-M417 Corded Ware was anyone other than the man in this sample or someone very much like him?
2. As there is no discernible change in autosomal DNA between 4,000 BC and the German Corded Ware period, and as nearly all Corded Ware yDNA is from the same M417 subclade of R1a, is there any reason to think there was any significant admixture with other people during this period of development leading up to full Corded Ware?
3. In particular, given that (i) almost all Yamnayan samples are from a different yDNA group (R1b-Z2103) and bear only a 65% match to the North Ukrainian and German Corded Ware samples, and (ii) Yamnaya only arose circa 3,300 BC (700 years after the closely-matching Ukrainian M417 man lived), is there any reason to think that German Corded Ware was derived from Yamnayan admixture to any significant degree, rather than by direct descendance from the community in North Ukraine in which the 4.000 BC M417 man lived?