---
schema: 1
type: term
title: endogamy
description: >-
  **Endogamy** is the practice of marriage occurring only within a defined
  group. In this channel's material, the example is **extreme endogamy in Indian
  castes** — neighboring castes unmixed for thousands of years, a pattern
  visible in the genetic record [^2efa1a72@0].
canonical: 'https://liquidgold.cc/channel/everyinc/explore/term/endogamy-f8fd14e31264'
markdown: 'https://liquidgold.cc/channel/everyinc/explore/term/endogamy-f8fd14e31264.md'
llms: null
parent: 'https://liquidgold.cc/channel/everyinc/llms.txt'
channel: everyinc
updated: '2026-10-23T22:12:35.346Z'
language: null
children: []
---


# endogamy

Canonical: https://liquidgold.cc/channel/everyinc/explore/term/endogamy-f8fd14e31264

Parent: [Channel index](https://liquidgold.cc/channel/everyinc/llms.txt)

## Definition

**Endogamy** is the practice of marriage occurring only within a defined group. In this channel's material, the example is **extreme endogamy in Indian castes** — neighboring castes unmixed for thousands of years, a pattern visible in the genetic record [^2efa1a72@0].

In this channel's material, **endogamy** appears during the live interview-prep session for **David Reich**, the Harvard geneticist whose ancient-DNA research reshaped the study of human origins [^2efa1a72@0]. As the host sketches the terrain of Reich's book before the conversation, one of the striking findings he highlights is **extreme endogamy in Indian castes** — neighboring castes that remained **unmixed for thousands of years**, a pattern that is directly visible in the genetic record [^2efa1a72@0].Endogamy is one of the signals that makes ancient-DNA work so powerful: marriage patterns leave a measurable trace in whole-genome sequencing of ancient samples, and Reich's framework reads those traces to reconstruct **migration waves, population replacements, and even whether an invasion was conquest or mingling** (via Y-chromosome vs. mitochondrial DNA patterns) [^2efa1a72@0]. So when you explore the material, endogamy is not abstract vocabulary — it is an example of how a social practice shows up as hard genetic evidence.- **Endogamy = marrying within one's own group**, as the term is used in this channel's captured material.- The concrete example is **Indian castes**: neighboring castes unmixed for thousands of years, detectable in the genetic record.- It illustrates why David Reich's ancient-DNA methods can make other theories about human origins empirically testable.