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The process by which new species or variations within species evolve in populations.
The process by which new species or variations within species evolve in populations. When two groups of the same species are reproductively isolated so they can't interbreed, they steadily accumulate genetic differences. Local environmental differences can also produce divergence in populations that are not isolated, particularly when the population is spread over a very large area.
When two groups of the same species are reproductively isolated so they can't interbreed, they steadily accumulate genetic differences. Local environmental differences can also produce divergence in populations that are not isolated, particularly when the population is spread over a very large area.