Why Might A Chromosomal Duplication Be A Positive Evolutionary Force?

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Why Might A Chromosomal Duplication Be A Positive Evolutionary Force?

If an organism make twice as much protein, it will be better suited to its environment. If there are two genes, one is free to mutate and take on a different function that may make it more fit. Organisms with more DNA are better able to cope with environmental change. Organisms that are able to survive chromosomal mutations, like duplications, must already be highly fit. None of these are true, duplications are mutations and all mutations are detrimental to an organism.
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If there are two genes, one is free to mutate and take on a different function that may make it more fit.

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