# Darwinian threshold

> English word · Proper noun

## Definitions
1. A transition period during the evolution of the first cells, when genetic transmission moves from a predominantly horizontal mode to a vertical mode.

## Etymology
Introduced by Carl Woese.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/darwinian-threshold