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The wheat in Spain grows all over

The researchers were also able to group Spaniards into five genetic clusters. On a map, these groups form five strips running north to south. Those strips line up neatly with history.

I wonder if you’d get a similar pattern looking at crops, say wheat. There’s lots of material in genebanks to play around with.

LATER: Thanks to David Marshall for pointing out that work has been done on barley.

It just needs someone to compare the patterns now. And repeat for other crops.