a higher and higher % of DMs, emails, etc. to me are from indians asking about their genetics. since there are 700 million indians on the internet. makes sense

i'll be publishing my 6K-word essay in indian genetics https://t.co/ycMGoZh13z

but some general points 1/n

- there's a lot of structure. which means you can look at an indian's genome and get an immediate sense of things and a little digging get's granularity very quickly

eg i guessed @suryasays family's jati after about 15 minutes (he was vague about this and had to ask mom)

- a lot of the variation is not partitioned geographically. very different from europe & china where geography is the dominant predictive variable.

indians have lots of structure which means non-geographical (jati) matter a lot. tamil brahmins more like UPites than other tamils

- the 'india-cline' pioneered by reich patterson is pretty explanatory. on one end you have west eurasian adjacent groups. jatts ppl in the NW and upper caste. and other end something away from them (more toward andamese). dalits, southerners etc.

- some groups are off the cline. that means they are not well modeled by the distribution. e.g.,

* parsies (75% iranian)
* bengalis (5-20% east asian)