Originally Posted by
Angela
I just looked up Hannah Moots and she is from Stanford. It's hard to imagine that there are two big papers on Italian genetics coming up and both are from Stanford, although I suppose it's possible.
"If" this "leaked" PCA is a legitimate and complete one from Hannah Moots' paper, then there is real cognitive dissonance between what she reportedly said to RYU and this PCA.
When I looked carefully at the placement of the "Ancient Romans" and compared them to the modern samples upon which they are superimposed, one lands in Tuscany and the rest land on modern Greeks, Sicilians and Southern Italians. (Contrary to what has been posted by "Generalissimo" most of them "do not" plot beyond modern mainland Southern Italians on the modern PCA.)
Yet, she is reported to have said about the Iron Age, i.e. "Republican" samples, (which would take you to about 20 B.C.) that 60% of them were Northern Italian like, and 40% were Southern Italian like. Even if you take Northern Italian to be anything north of Rome, which would include Tuscany in northern Italy, 60% of them decidedly do not plot in Tuscany.
Even given the distortion caused by superimposing ancient samples on top of modern samples, this doesn't make sense.
The only other possibility which comes to mind is that the Iron Age samples didn't come from the vicinity of Rome but it seems to me the quote was specifically talking about "Romans" .
Either there are two papers, or this "leaked" PCA is incomplete and doesn't include the Republic Era samples where 60% of the samples were supposedly Northern Italian like.
Whoever took it upon him or herself to post this "leaked" PCA has a responsibility to let everyone know whether it is the work of Hannah Moots, and if it is, why none of the Iron Age Roman samples plot in Northern Italy. Now, if these are only the "Imperial Era" samples, fine, just say so. Otherwise, it is misleading everyone.
I really hope someone is not playing games with a PCA from an academic paper.
Whoever posted it should explain what's going on.
Oh, the original quote From RYU said Umbrians, Picenes, and SABINES, not Samnites, clustered with Etruscans. I made the error once too. All those named groups clustered with modern N Italians. I don't know what academic Northern Italian samples they used. I hope not just Bergamo. As I've been saying ad nauseam for years there's far more diversity in northern Italy than in Southern Italy.
In addition, how can people not realize, when they’re trying to model modern Southern and even Central Italians, that the most reliable way would be to use Italian Neolithic or at least something like Rinaldone, neither of which we have, or at least Sicily Beaker, which is not very Beaker like, and not necessarily Minoan Lashithi. Minoan Lasithi is basically EEF. How do you know you’re measuring actual migration in the BRONZE AGE when you’re using that sample.
Think through what you’re doing when chucking in samples, people.