Cline (biology) - Wikipedia
In biology, a cline is a measurable gradient in a single characteristic (or biological trait) of a species across its geographical range. [1] Clines usually have a genetic (e.g. allele frequency, blood type), or phenotypic (e.g. body size, skin pigmentation) character. They can show either smooth, continuous gradation in a character, or more ...
20.3: Five Agents of Evolutionary Change - Biology LibreTexts
One type of geographic variation, called a cline, can be seen as populations of a given species vary gradually across an ecological gradient. Species of warm-blooded animals, for example, tend to have larger bodies in the cooler climates closer to …
Cline | biology | Britannica
It can be expressed by the formula D p = N i / A where Dp is population density, Ni is the number of individuals of the species in question, and A is the area expressed in square units, often square kilometers (km 2) or square miles (miles 2).
Clines - Encyclopedia.com
Clines. In 1938 the English biologist Julian Huxley proposed using the Greek-derived word cline to represent the gradual change of a single biological trait (e.g., skin color) in a given species over a geographical area. The gradient in the expression of any such trait represents a response to the graded change in theintensity of the selective ...
19.E: The Evolution of Populations (Exercises) - Biology LibreTexts
2021年12月28日 · A cline is a type of geographic variation that is seen in populations of a given species that vary gradually across an ecological gradient. For example, warm-blooded animals tend to have larger bodies in the cooler climates closer to the earth’s poles, allowing them to better conserve heat.
BIOL B242 - CLINES AND HYBRID ZONES
Any consistent change in gene frequency, or in heritable phenotype, across the geographical range is known as a cline. Clines occur because dispersal across a region is limited, because individuals from the whole geographical area do not form a single panmictic population.
Cline (biology) - WikiMili, The Best Wikipedia Reader
2023年8月19日 · In biology, a cline (from the Greek κλίνειν klinein, meaning to lean) is a measurable gradient in a single characteristic (or biological trait) of a species across its geographical range. First coined by Julian Huxley in 1938, the cline usually has a genetic (e.g. allele frequency, blood type), or p.
Mechanisms and tests for geographic clines in genetic …
2015年1月20日 · A continuous spatial gradient in visible traits, which is called a cline, is a natural model system for quantifying the effects of selection and stochastic factors and their relative importance. Geographic clines in phenotypic traits also provide key insights into the evolutionary forces that lead to allopatric speciation in nature.
Explain what a cline is and provide examples. - Vaia
01. Introduction. A cline is a geographic gradient or average character value that gradually increases geographic variance by a gene's frequency. 02. Explanation. Geographic variation arises in populations of a particular species and spreads across an ecological gradient known as a …
Cline - (World Biogeography) - Vocab, Definition, Explanations
A cline is a gradual change in a trait or characteristic within a species across geographical locations, often reflecting environmental gradients. This concept highlights how populations can vary along a continuum rather than having sharp boundaries, revealing insights into how species adapt to their environments.
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