Obviously, random chance...
It's a bit ignorant/racist to expect people from different countries to look distinctly different (fashion notwithstanding), when genetics are so overlapping
The about page at https://alllooksame.com/about/ seems to indicate that the author who is of Japanese descent is not able to differentiate between them himself and made this website to test the assumption
In any case, I thought the "you all look the same" racist trope is that east asian people look similar to one another individually? is there an actual expectation of being able to tell the actual ethnicity/countries apart?
> is there an actual expectation of being able to tell the actual ethnicity/countries apart?
Facial structure, there are some obvious ones in ALS. But generally speaking, it's fashion that gives it away. I can spot a (relatively recent) Japanese immigrant from a hundred feet away by her clothes. It's a bit like if you see someone in Europe with a baseball cap, you can be almost certain they're American. Sandals with socks? German. Etc.
My recollection is that this website says that a 50% score is bad when the expected value of random chance of picking the correct option among 3 is 1/3. A 50% average score means there is some signal there. If it was impossible to guess, the average score should be 33%
It seems their deeper sequencing of dire wolf samples clarified the phylogeny - they claim the dire wolf's closest living relative is the gray wolf, at 99.5% identity. The 2021 study was only able to sequence the dire wolf genome at 0.23x coverage and put a 0.56 probability on their species tree (Fig 2A).
https://orbi.uliege.be/bitstream/2268/255832/1/NatureDireWol...
Why do you think this is reputable research? MDPI does not inspire confidence, and it's written by a UFOlogist-chemist. And what is "radar ultrasound"?!
Hasn't backmigration/Eurasian admixture post-introgression made that true? iirc reference bias artefactually made African genomes look like they had no Neanderthal segments.
I read a bit more. There definitely was introgression of West Eurasian populations into East Africa and Sudan than percolated into West Africans to the tune of about 15 million base-pairs of sequence tagged as Neanderthal. Not sure we have values for how much Yoruban ancestry is now embedded in Mbuti genomes, but it is small. So the flow of Neanderthal genomes into Central African hunter-gathers will sub-decimal dust.
But having said all that, maybe the key point Zimmer is making IS a good generalization.
I think it is a fair generalization at this point. Mbuti also have a ~6% West Eurasian admixture signal using an ancient (4.5kya) Ethiopian individual as reference, though Pickrell 2014 did not see it. Decimal dust, perhaps?
https://www.science.org/doi/10.1126/science.aad2879
The ghost admixture story(s) will turn out to be much more localized, I imagine.
Probably the vast majority of studies are correct and a few misinterpret artefacts, and then a journalist uses an evocative word like "teeming" without knowing that what they're saying doesn't pass the sniff test. Same reason these papers languish for years and don't pass peer review in rigorous journals
Why hasn't it passed peer review yet? Maybe because they only used techniques prone to artefacts. IMO if a brain microbiome exists in healthy people it would have been seen already, with all the microscopy and sequencing done
see also: Applied Science's attempt 12 years ago (no fancy pressurized mixing machine so the result is weaker than the real thing).
https://www.youtube.com/watch?v=qsSwvmNEr0Q
IMO his is the best random project channel on youtube
