Diversity is essential for evolution from "summary" of The Uniqueness of the Individual by Peter Brian Medawar
In the grand scheme of life, diversity is not just a desirable feature - it is an absolute necessity. Without it, evolution would come to a screeching halt. This is because diversity provides the raw material upon which natural selection acts. It is the fuel that drives the engine of evolution forward, allowing species to adapt to changing environments and giving rise to new forms of life. Imagine a world where every individual within a species is exactly the same. There would be no variation, no differences in traits or characteristics. In such a world, natural selection would have nothing to work with. There would be no advantageous traits to select for, no genetic variation to drive the process of evolution. Diversity, therefore, is not just important - it is essential. But diversity is not just important at the level of the individual. It is also crucial at the level of populations and species. Popu...
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