“GENE DUPLICATION is thought to contribute most to the generation of new genes. A single or few new gene structure(s) can be formed at one time by DNA-based duplication (the copying and pasting of DNA sequence from one genomic region to another) or retroposition. While DNA-based duplications are often tandem, retroposed genes most often move to a new genomic environment, where they must acquire new regulatory elements or risk becoming processed pseudogenes.”
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