A few days ago I wrote here, thread Re: U152 and the Ancient Ligures or Ligurians:“I have fought from many years the theories of the Nordtvedts and Vizacheros etc. about the mutation rate and I think with good arguments: the mutations around the modal etc.”
Now on Rootsweb Mr. Nordtvedt writes: “This means the early time structure of haplogroup I tree is changed from what I thought it would be from STR interclade variance or GD considerations. The I2 branch line is even more ancient now. Four branch lines to I1, I2a, I2, I2b separate from each other at about the same time 20,000 years ago. The node where the I2a and I2b branch lines separate being the latest event.
This is the first time in the early I tree when snp evidence contradicted the inference from earlier acquired STR evidence concerning temporal order of tree nodes”.
Come volevasi dimostrare. QED (quod erat demonstrandum).