Practice question

Protective mimicry works best when predators have learned to associate the model's appearance with an unpleasant or dangerous experience and when genuine models outnumber mimics. Frequent encounters with defended models reinforce avoidance, whereas numerous edible mimics reward attacks and weaken the signal's reliability. This frequency dependence is especially important in Batesian mimicry, where the mimic gains protection without carrying the model's defense. Equal numbers offer weaker reliability, and absence of predator learning removes the behavioral mechanism that makes resemblance protective. A model population larger than the mimic population, combined with predator education, therefore provides the most favorable conditions for sustained avoidance. From an evolutionary perspective, traits persist when their net effects improve inclusive or direct fitness under prevailing conditions. The ecological terminology therefore summarizes both an immediate mechanism and its likely consequences across generations. A careful interpretation retains the assumptions of the underlying model and avoids extending it beyond available evidence. Within those assumptions, the keyed concept gives the most consistent account of the biological pattern and its expected outcome.