Geographical isolation

The geographic isolation ( biological technical term separation) referred to in the theory of evolution the beginning of allopatric speciation.

Under separation refers to the separation of a gene pool into two gene pools by geographic factors (mountains, deserts, ice ages, separation of continents, etc.) or drift of a population member in the isolates.

The geographical separation - for example, by mountain building or grave breaches - can cause that kind of a two ( or more ) develop species.

This separation prevents gene flow between the two populations, so that they can develop independently. Thus, the geographic separation is a prerequisite for allopatric speciation.

The term " isolation" should only be used in evolutionary biology, if one refers to isolation mechanisms, ie factors that prevent genetic mixing of two species after speciation.