C O N T E N T SSee AlsoDescriptionProgressively changing zones of degree difference in frequency of a trait with movement from one region to another. The gradual decrease in frequency of the B blood allele going west in Europe is an example of such a gradation or clinal distribution.
Clines of group B distribution Source Discussion'Discontinuous distribution' is the geographic distribution of a trait such that it appears in high or low frequencies in various areas with little or no gradation between them. Links |
