Concept of species realistic

In contrast to the more or less single nominalist concept, there are a number of realistic concepts of species (e.g. historical concept of species, essentialist concept of species, structuralist concept of species). They are all based on the concept that species and the boundaries between them are objectively present in nature, independently of man’s will. The individual realistic concepts differ primarily in what they consider to be the cause of the distinctness of the individual species.

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The classical Darwinian theory of evolution can explain the evolution of adaptive traits only in asexual organisms. The frozen plasticity theory is much more general: It can also explain the origin and evolution of adaptive traits in both asexual and sexual organisms Read more