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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. 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 … See more
Clines are often cited to be the result of two opposing drivers: selection and gene flow (also known as migration). Selection causes adaptation to the local environment, resulting in different genotypes or phenotypes being … See more
According to Huxley, clines can be classified into two categories; continuous clines and discontinuous stepped clines. These types of clines … See more
Although the term "cline" was first officially coined by Huxley in 1938, gradients and geographic variations in the character states of species … See more
The steepness, or gradient, of a cline reflects the extent of the differentiation in the character across a geographic range. For example, a steep cline could indicate large variation in the colour of plumage between adjacent bird populations. It has been previously … See more
It was originally assumed that geographic isolation was a necessary precursor to speciation (allopatric speciation). The possibility that clines … See more
Clines can be portrayed graphically on maps using lines that show the transition in character state from one end of the geographic range to the other. Character states can however additionally be represented using isophenes, defined by Ernst Mayr as … See more
Wikipedia text under CC-BY-SA license 20.3: Five Agents of Evolutionary Change - Biology LibreTexts
WEBOne 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, …
Cline - Encyclopedia.com
WEBMay 23, 2018 · cline. A gradual change in gene frequencies or character states within a species, across its geographic distribution. cline, in biology, any gradual change in a …
Clines - Encyclopedia.com
WEBIn 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 …
19.E: The Evolution of Populations (Exercises) - Biology LibreTexts
WEBDec 28, 2021 · 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 …
Clines and Continuous Variation - Encyclopedia.com
WEBA cline can be based on either directly observable external biological traits, also called phenotypes (e.g., hair color, skin pigmentation, stature), or it can be derived from genes …
Cline - Simple English Wikipedia, the free encyclopedia
WEBIn biology, a cline, [ 1] or 'ecocline', describes a series of connected populations in a species. These populations show a continuous gradient of traits and genetics. [ 2] The …
Cline (biology) explained - Everything Explained Today
WEBIn 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 …
Mechanisms and tests for geographic clines in genetic …
WEBJan 20, 2015 · 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 …
Rapid Evolution of a Geographic Cline in Size in an …
WEBJan 14, 2000 · No latitudinal cline in wing size was evident on either continent about one decade after the introduction (15, 16). Here we reexamine the North American populations to determine whether a cline …
BIOL B242 - CLINES AND HYBRID ZONES
WEBAny 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 …
Clinal variation as a tool to understand climate change
WEBOct 11, 2022 · Clines are observable gradients that reflect continuous change in biological traits of species across geographical ranges. Clinal gradients could vary at geographic …
Cline - Vocab, Definition, and Must Know Facts | Fiveable
WEBA cline is a gradual change in a trait or characteristic of a species over a geographic area. This variation occurs due to differences in environmental conditions across the …
Cline | biology | Britannica
WEBcline. biology. Learn about this topic in these articles: insect evolution. In insect: Continuing evolution. Another example of this cline type of evolution is the development …
Cline (biology) - WikiMili, The Best Wikipedia Reader
WEBAug 19, 2023 · 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 …
Cline | Encyclopedia MDPI
WEBNov 9, 2022 · In biology, a cline (from the Greek κλίνειν klinein, meaning "to lean") is a measurable gradient in a single character (or biological trait) of a species across its …
Cline (population genetics) - bionity.com
WEBA cline is a gradual change of a character or feature (phenotype) in a species over a geographical area, often as a result of environmental heterogeneity. In population …
RACE - The Power of an Illusion . Background Readings | PBS
WEBCline is a term that was devised by the biologist Julian Huxley to represent a geographical gradient in a particular trait across a species.
Ring species - Wikipedia
WEBIn a ring species, gene flow occurs between neighbouring populations of a species, but at the ends of the "ring", the populations don't interbreed. The coloured bars show natural …
Cline Definition & Meaning - Merriam-Webster
WEBThe meaning of CLINE is a gradient of morphological or physiological change in a group of related organisms usually along a line of environmental or geographic transition. How …
Alternative forms for genomic clines - PMC - National Center for ...
WEBMay 23, 2013 · Genomic cline analysis offers a satisfying alternative with potential to reveal important patterns of variation that have not sorted out along a geographic gradient.
Latitudinal clines: an evolutionary view on biological rhythms
WEBAug 22, 2013 · The use of latitudinal (and altitudinal) clines in identifying selective forces acting on biological rhythms is discussed, and we evaluate how these studies can reveal …
Cline (biology) | Wikipedia audio article - YouTube
WEBDec 25, 2018 · This is an audio version of the Wikipedia Article:https://en.wikipedia.org/wiki/Cline_(biology)00:01:38 1 Drivers and the evolution …
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