Planaria represent an extreme case where the ratchet has run fully, producing a functional body almost regardless of genome, making them recalcitrant to genetic manipulation.

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

• Planaria maintain memories and re-imprint them from tail fragments onto newly regenerating brains.finding0.816
  Example of memory dynamics during extreme regeneration.
• Manipulation of resting potential pattern in planaria stably alters target morphology (head number) despite wild-type genetics.finding0.812
  Transient bioelectric perturbation with ion channel drugs/RNAi permanently alters the number of heads regenerated even in subsequent rounds without further treatment, demonstrating bioelectric pattern memory.
• Planaria have fully committed to a strategy that overrides genetic details with large-scale pattern completion.claim0.812
  Interpretive claim explaining planarian robustness as top-down morphogenetic intelligence.
• Planaria permanently generate two-headed forms despite completely wild-type genetic sequence after bioelectric pattern rewriting.finding0.804
  Demonstrates that anatomical outcomes can be reprogrammed at the bioelectric level independently of DNA, inverting the software/hardware metaphor
• The same wild-type genome can produce 1-, 2-, or 0-headed planaria depending on bioelectric history, showing that anatomical outcome is not directly encoded in the genome.claim0.800
  Demonstrates the role of epigenetic bioelectric software.
• Planarian flatworms contain voltage patterns in non-neural cells that are re-writable latent pattern memories guiding future regenerative anatomy, editable without touching the genome.finding0.793
  Key empirical result demonstrating a sharp distinction between the cellular machine and the data it uses, analogous to false memory inception
• Planarian flatworms are extremely resistant to transgenesis, aging, cancer, and injury despite incredibly noisy genome.finding0.791
  Levin et al. 2019 finding on planarian robustness.
• Pattern memory in planaria can be re-written non-genetically via transient modification of membrane potential, leading to permanent changes in target morphology.claim0.788
  Summarizes the two-headed planarian phenomenon.