korrents

On the map

Tap a claim on the ring to put it at the centre.

← Natural selection in humans has not been quiescent: it is tugging…

8 connected korrents · 1 moment on record from 8 May 2026 to 8 May 2026.

Same subjectSame subjectSame subjectSame subjectSame subjectSame subjectSame subjectSame subject Read this korrent: Natural selection in humans has not been quiescent: it is tugging almost every position in the genome in one direction or another, everywhere. Natural selection in humans has notbeen quiescent: it is tugging almostevery position in the genome in onedirection or another, everywhere. DR David Reich — holds since 2026-05-08 — tap for who they are Same subject: There is more room at the top for every human trait: push selection harder in any direction and the mean would move, at some cost elsewhere. — tap to centre the map on it There is more room at the topfor every human trait: pushselection harder in anydirection and the mean would… DR David Reich — holds since 2026-05-08 — tap for who they are Same subject: The selection signal on the genetics of schooling is not a European artefact: the same variants predict years of school in China, a population disconnected from Europe for the whole period. — tap to centre the map on it The selection signal on thegenetics of schooling is not aEuropean artefact: the samevariants predict years of… DR David Reich — holds since 2026-05-08 — tap for who they are Same subject: Adaptation accounts for only about 2% of the change in human gene frequencies; the other 98% is migration, mixture and drift. — tap to centre the map on it Adaptation accounts for onlyabout 2% of the change inhuman gene frequencies; theother 98% is migration… DR David Reich — holds since 2026-05-08 — tap for who they are Same subject: Finding no selection in African-Americans over 300 years is not evidence against selection: five generations is simply too short a time to compound. — tap to centre the map on it Finding no selection inAfrican-Americans over 300years is not evidence againstselection: five generations is… DR David Reich — holds since 2026-05-08 — tap for who they are Same subject: Periods of migration are the worst moments to look for natural selection, not the best, because they drown the signal in huge frequency swings. — tap to centre the map on it Periods of migration are theworst moments to look fornatural selection, not thebest, because they drown the… DR David Reich — holds since 2026-05-08 — tap for who they are Same subject: Complex human traits have not been pushed steadily in one direction because both ends of the spectrum carry advantages in different times and places. — tap to centre the map on it Complex human traits have notbeen pushed steadily in onedirection because both ends ofthe spectrum carry advantages… DR David Reich — holds since 2026-05-08 — tap for who they are Same subject: Selection on the genetic predictors of cognitive performance peaked in the Bronze Age and has left no trace at all in the last 2,000 years. — tap to centre the map on it Selection on the geneticpredictors of cognitiveperformance peaked in theBronze Age and has left no… DR David Reich — holds since 2026-05-08 — tap for who they are Same subject: What has actually been under selection is probably not intelligence but a general trait more like executive function or the propensity to defer gratification. — tap to centre the map on it What has actually been underselection is probably notintelligence but a generaltrait more like executive… DR David Reich — holds since 2026-05-08 — tap for who they are
same subject or similar wording

At the centre Natural selection in humans has not been quiescent: it is tugging almost every position in the genome in one direction or another, everywhere. Holds David Reich Read this korrent →