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Evolutionary Adaptation Mechanisms

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Abstractions about how populations adapt or fail to adapt over generations — mechanisms coupling learned behavior to heritable change (Baldwin effect, genetic assimilation), constraints on reversing evolution (Dollo's law), and evolved decision rules that can become miscalibrated (ecological trap, r/K selection theory).

6 abstractions in this family — domain-specific abstractions that sit near one another in structural-signature space (k-means over structural-signature embeddings). Each is shown with its short description.

  • Baldwin Effect — A learned, practiced, or behaviorally acquired trait becomes easier to produce across generations as selection favors heritable variants that reduce its acquisition cost, without inheriting the learned state itself.
  • Dollo's Law — The evolutionary generalization that a complex trait once lost is overwhelmingly unlikely to re-evolve in identical form, because the genetic-developmental scaffolding that built it pseudogenizes faster than selection can reassemble it.
  • Ecological Trap — The situation where an organism's evolved decision rule keeps following a once-reliable cue whose correlation with fitness has been severed by recent change, so the unchanged rule now reliably steers it toward a low-fitness or lethal outcome it actively prefers.
  • Genetic Assimilation — A phenotype initially dependent on an environmental or plastic trigger becomes increasingly trigger-independent across generations as natural selection shifts heritable variation toward constitutive expression.
  • Precociality and Altriciality — Precociality and altriciality compare offspring maturity and functional independence at birth or hatching, allowing intermediate and multidimensional trait profiles.
  • r/K Selection Theory — Predict a population's covarying demographic traits from how its environment divides a finite parental energy budget between offspring quantity and per-offspring investment — the r face for filling empty habitat fast, the K face for competing in a saturated one.