The role-Change of the frequency of alleles, genotypes towards components determine the orientation factor → the evolution.-Create complex creatures adapt to the living environment.-Natural selection is the evolutionary factor most basic because: + CLTN happening constantly in all populations.+ CLTN guidance for the process of evolution+ Natural selection pressure regulating the speed the process of evolution, natural selection, the more powerful, the speed, the more powerful evolution. Much larger CLTN Yalu times compared to other evolutionary factors.
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