epigenetic inheritance

Compiled with AI assistance and selectively reviewed. Please consult the cited passages; the books remain the authoritative source. About this companion

Editorial synthesis · provisional

Definition

Epigenetic inheritance is the transmission across generations of gene-expression states or regulatory effects without a change in DNA sequence. RB1 describes methylation, histone marks and RNA-mediated routes while qualifying their persistence and organism-specific evidence. Such inheritance is often transient, especially in animals; its occurrence and adaptive role in mammals remain contested. It does not warrant unrestricted claims that acquired experiences or memories become genetically inherited.

Explanation

The source separates sequence inheritance from expression-related mechanisms and allows environmental conditions to influence regulatory states. A regulatory response within one organism is not by itself the transgenerational phenomenon named here. RB1’s account requires attention to what actually persists through generations, rather than calling every change in gene expression inherited evolution.

The explicit qualifications are substantial: marks may revert after a few generations; longer persistence is reported in some systems; plants, nematodes and fruit flies differ from contested mammalian cases. The native apparatus includes critical as well as supportive discussions. This prevents a broad explanatory category from becoming an unqualified human-trauma inheritance assertion.

RB3’s broader social-to-regulatory feedback passage supplies a multiscale application that must be read alongside those limits. PB’s earlier art essay uses ancestral bodily memory in a different rhetorical register. Its score-sheet metaphor does not provide an empirical demonstration of inherited episodic memories or settle the later technical inheritance debate.

Scope and attribution

Preserve organism-specific evidence, transience, controversy and the earlier literary register.

RB1 — The Real Book, Volume I: The Possible Is Real

Mechanisms, transient persistence and mammalian controversy qualify the inheritance claim.

Occurrence locators: 147, 150, 151, 152.

RB3 — The Real Book, Volume III: Murmurations

Social and environmental feedback is broader than proof of durable mammalian inheritance.

Occurrence locators: 79.

Background used in the editorial explanation

Named theories and mechanisms are distinguished from neighboring background, homonyms and the author’s own synthesis. Reproduced AI passages retain their separate voice.