cline

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cline

cline in biology, any gradual change in a particular characteristic of a population of organisms from one end of the geographical range of the population to the other. Gradients of characteristics usually accompany, and are responses to, environmental gradients; for example, a mountain range features gradients from top to bottom such as a temperature gradient (colder to warmer) and a humidity gradient (wetter to drier). They may also reflect patterns of individual migration or gene flow. In species of birds and mammals, there is usually a cline in body size, with smaller individuals in warm climates and larger individuals tending to be found in colder climates.

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cline

A Dictionary of Zoology | 1999 | | Â© A Dictionary of Zoology 1999, originally published by Oxford University Press 1999. (Hide copyright information) Copyright

cline A gradual change in gene frequencies or character states within a species across its geographic distribution.

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MICHAEL ALLABY. "cline." A Dictionary of Zoology. 1999. Encyclopedia.com. 30 Nov. 2009 <http://www.encyclopedia.com>.

MICHAEL ALLABY. "cline." A Dictionary of Zoology. 1999. Encyclopedia.com. (November 30, 2009). http://www.encyclopedia.com/doc/1O8-cline.html

MICHAEL ALLABY. "cline." A Dictionary of Zoology. 1999. Retrieved November 30, 2009 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O8-cline.html

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cline

A Dictionary of Earth Sciences | 1999 | | Â© A Dictionary of Earth Sciences 1999, originally published by Oxford University Press 1999. (Hide copyright information) Copyright

cline Gradual change in gene frequencies or character states within a species, across its geographic distribution.

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AILSA ALLABY and MICHAEL ALLABY. "cline." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 30 Nov. 2009 <http://www.encyclopedia.com>.

AILSA ALLABY and MICHAEL ALLABY. "cline." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (November 30, 2009). http://www.encyclopedia.com/doc/1O13-cline.html

AILSA ALLABY and MICHAEL ALLABY. "cline." A Dictionary of Earth Sciences. 1999. Retrieved November 30, 2009 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-cline.html

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