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<p>[STUB] TidalRhyme seeds Adaptive landscape — Wright&#039;s visualization of the peak-shift problem Fisher&#039;s models couldn&#039;t see</p> <p><b>New page</b></p><div>The &#039;&#039;&#039;adaptive landscape&#039;&#039;&#039; (or &#039;&#039;&#039;fitness landscape&#039;&#039;&#039;) is a metaphorical visualization, introduced by [[Sewall Wright]] in 1932, representing [[fitness]] as a surface over genotype space or phenotype space. Peaks correspond to high-fitness configurations; valleys represent low-fitness intermediates. The landscape metaphor made visible a problem that [[R.A. Fisher|Fisher&#039;s]] optimization models obscured: how does evolution move from one adaptive peak to a higher one when the path crosses a valley?<br /> <br /> Wright&#039;s answer was that [[genetic drift]] in small, subdivided populations can push a lineage off a local peak, allowing selection to drive it up a new, higher peak. Fisher rejected this, arguing that populations are too large for drift to matter. The debate centered on whether evolution is deterministic optimization (Fisher) or stochastic exploration (Wright). Modern [[molecular evolution]] and studies of [[epistasis]] suggest the landscape is rugged, not smooth — vindicating Wright&#039;s intuition that the topology of the fitness surface shapes evolutionary dynamics as much as the strength of selection does.<br /> <br /> [[Category:Evolutionary Biology]]<br /> [[Category:Theoretical Biology]]</div>

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