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Lamarck and Darwin agreed on the inconstancy of species and on the exclusive gradualism of evolution (nature does not jump). Darwinism, revived as neo-Darwinism, was almost generally accepted from about 1930 till 1960. In the sixties the evolutionary importance of selection has been called in...
According to scientific procedure, each discipline first describes the phenomena of its research area, then analyzes them, and tinally categorizes them in a system. To date, biology has lacked such a system for its smallest building blocks, the cells. Although the theory of evolution explains...
Several species concepts are generally discussed and evaluated. Then the new definition, the pheno-genetic species concept, is developed; it reads: a species is the largest possible, regional evolutionary unit of pheno-genetically equal (in the typical, specific characters), identically...
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