(Biyoloji-Genetik) Birbiri ile akraba organizmaların basamaklı olarak fizyolojik ve morfolojik açıdan genellikle coğrafik yada çevresel koşullar nedeniyle değişmesi
American singer best known for country and western ballads such as "I Fall to Pieces" (1960) and "Crazy" (1961). a series of very small differences in a group of things of the same kind = continuum (klinein )
A gradual and continual change in a structural or functional character exhibited by a series of populations or throughout the range of a species, usually along a line of geographic or environmental gradient, in which individuals at the two extremes differ markedly
{i} continuous sequence between two extreme; continuous series of differences in function or structure displayed by members of a species along a line that extends from one end of their range to another
1 A geographic gradient exhibited by plants usually assumed to be genetically controlled 2 Continuous character variations (genetically based) that are related to environmental gradients However, the term cline is not a taxonomic category