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'''Allen's rule''' is an observed pattern of [[morphological]] traits that vary within a [[species]] based on their [[geographical location]] proposed by [[Joel Asaph Allen]].  Specfically, Allen's rule states that members of warm-blooded species that live in hot [[environments]] have longer [[extremities]] in comparison with members of the equivalent species living in cooler enviroments.
'''Allen's rule''' is an observed pattern of [[morphological]] traits that vary within a [[species]] based on their [[geographical location]] proposed by [[Joel Asaph Allen]].  Specfically, Allen's rule states that members of warm-blooded species that live in hot [[environments]] have longer [[extremities]] in comparison with members of the equivalent species living in cooler environments.


==See Also==
==See Also==
*[[Bergmann's rule]]
*[[Bergmann's rule]]

Latest revision as of 04:28, 7 February 2010

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Allen's rule is an observed pattern of morphological traits that vary within a species based on their geographical location proposed by Joel Asaph Allen. Specfically, Allen's rule states that members of warm-blooded species that live in hot environments have longer extremities in comparison with members of the equivalent species living in cooler environments.

See Also