Clinally | definition of clinally by Medical dictionary
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A systematic relation between location and the frequencies of alleles; lines connecting points of equal frequency are termed isoclines, and the direction of the cline at any point is at right angles to an isocline.
[G. klinō, to slope]
A gradual change in a character or feature across the distributional range of a species or population, usually correlated with an environmental or geographic transition.
clin′al (klī′nəl) adj.
cline a gradual and continuous (or nearly continuous) change in a character (such as size or colour) in relation to its geographical or ecological distribution. For example, there is an increase in the percentage of bridled forms in the guillemot population with more northerly latitudes.
References in periodicals archive
RFLP haplotype frequencies vary clinally
along the coastline for 2 of 3 mtDNA regions surveyed (Figs.
Covariation of the three variables under study would suggest that the observed patterns of call variation result from patterns of gene flow that are strong enough to mask selection effects, although there could be alternative explanations such as an evolutionary response to clinally
varying selection (also see Endler 1977).
Recombinant chromosomes are clinally
distributed and weaken barriers to gene flow by providing a bridge between the two parental types.