A polyphenic trait is a trait for which multiple, discrete phenotypes can arise from a single genotype as a result of differing environmental conditions. It is therefore a special case of phenotypic plasticity. ==Definition== A polyphenism is a biological mechanism that causes a trait to be polyphenic. For example, crocodiles possess a sex-determi...
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http://en.wikipedia.org/wiki/Polyphenism
The existence of several phenotypesin a population which are caused byenvironmental influences rather than different genetic types. ... (09 Oct 1997) ...
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http://www.encyclo.co.uk/local/20973
Type: Term Pronunciation: pol-ē-fē′nizm Definitions: 1. Ability of a single genome to produce alternative phenotypes in response to environmental clues.
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http://www.medilexicon.com/medicaldictionary.php?t=71047
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