地理上的隔离是隔离种群所必需的条件，且地理隔离的性质完全取决于生物体的生物学特性及其分散的可能性。
The nature of the geographic separation necessary to isolate populations depends entirely on the biology of the organism and its potential for dispersal.
这对于理解遗传变异性的空间变异、理解岛屿种群和其它隔离种群的保护问题有重要启示。
This has implications for our understanding of spatial variation in genetic variability and for problems of conservation on islands and in other isolated populations.
例如，当同一物种的种群彼此隔离时，然后就会向着两个不同的方向发展，从而形成两个截然不同的物种。
Like when populations of the same species are isolated from each other and then develop into two different directions and end up as two distinct species.
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