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Polymorphism (biology)
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==Mechanisms== Three mechanisms may cause polymorphism:<ref>{{cite journal | last1 = Leimar | first1 = O | date = Jun 2005 | title = The evolution of phenotypic polymorphism: randomized strategies versus evolutionary branching | journal = Am Nat | volume = 165 | issue=6| pages=669β681 | pmid=15937747 | doi=10.1086/429566 | bibcode = 2005ANat..165..669L | s2cid=8062017 }}</ref> * [[Genetic polymorphism]] β where the phenotype of each individual is genetically determined ** An example of this can be seen in the [[blue-tailed damselfly]] (''Ischnura elegans'') * A conditional development strategy, where the phenotype of each individual is set by environmental cues * A mixed development strategy, where the phenotype is randomly assigned during development
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