claim

active

claim:the-number-of-embryos-emerging-from-an-embryonic-blastoderm-is-not-genetically-fixed-but-determined-in-real-time-by-physiological-processes

The number of embryos emerging from an embryonic blastoderm is not genetically fixed but determined in real-time by physiological processes.

Highlights dynamical determination of individuality through collective autopoiesis.

Source paper

extracted_from

Collective intelligence: A unifying concept for integrating biology across scales and substrates

(2024) · Patrick McMillen · Michael Levin

Neighborhood — ranked by edge-count

Findings (1)

finding

Temporary introduction of breaks in the embryonic blastoderm results in twins, triplets, etc. (Lutz 1949)
supports
Demonstrates that the blastoderm is a dynamical excitable medium where multiple coherent embryos can self-organize, not fixed by genetics.

Communities (2)

community

Bioelectric morphogenesis & anatomical intelligence
members_of
Levin-led research showing bioelectric signals encode and control anatomical goal states in living systems.
Distributed biological agency and morphogenetic learning
members_of
Non-neural and neural tissues exhibit autonomous learning and goal-directed behavior in closed-loop systems, from cultured neurons to bioelectric collectives, challenging centralized brain-centric models of cognition.

Questions (2)

question

How many individuals are present in an embryonic blastoderm?
gates
Questions the fixed-ness of individuality and points to the dynamical determination of embryo count.
What precisely are we counting when we say it is 1 embryo?
gates
Raises the problem of defining individuality in a collective of cells.

Related by similarity (8)

cosine ≥ 0.65 · no typed edge

Entities in the same semantic neighborhood but without a typed relation to this one — candidates for new edges or unrecognized duplicates.

"the number of embryos emerging from the excitable medium of an embryonic blastoderm is not genetically fixed but determined in real-time by physiological processes"quote0.928
Key finding establishing that biological individuality is dynamically determined by collective coordination, not hardwired genetics.
Stress-sharing embryos achieve perfect sequential target patterns; non-sharing limited to <1% improvement.finding0.772
Stress-sharing embryos formed each sequential target with stress reducing to zero; non-sharing achieved only tiny improvements.
In stress-sharing embryo, average stress reduced to zero at step 40 during sequential target morphogenesis; without-sharing stress settled at non-zero with <55 cells movingfinding0.768
Shows stress sharing allows perfect formation of part-by-part target patterns.
Xenopus embryos scale body pattern to available cell number (Cooke 1979, 1981).finding0.759
Classic example of regulative development adjusting to cell count.
Every living process resembles, in general terms, the process which underlies the unfolding of an embryo—morphogenesis.claim0.757
Deep structural analogy that argues living process in architecture mirrors biological differentiation and division.
In embryological development, chemistry and cell migrations are mechanisms that do the work but are simply not the principal thing going on — the fifteen properties and their unfolding are.claim0.755
Alexander's interpretive priority claim distinguishing mechanistic substrate from the morphogenetic principle at work
Embryonic Blastodermconcept0.754
Dynamic excitable medium in which multiple coherent embryos self-organize; demonstrates that organism number is physiologically determined, not genetically fixed.
Mammalian embryos overcome drastic perturbations such as amputation, and early embryo splitting results in normal monozygotic twins.finding0.752
Demonstrates mammalian regulative capacity and robust self-organization.