High Quality Content by WIKIPEDIA articles! Evolution by gene duplication is a mechanism of Natural Selection which results in novel features of living organisms. Gene duplication is generally thought to be a major driving force of evolvability. Gene duplication is a randomly occurring mutational event within cells during which a stretch of DNA, and all genes that might be located on it, is duplicated. The two copies of a gene resulting from such a duplication are inherited by all descendants of the cell in which it occurred and are thus prone to random mutation and natural selection. A central theory of molecular evolution states that most genes are under strong selection pressure to conserve any existing gene and that only after a gene duplication a gene is freed from this selection pressure and eventually might accumulate mutations that cause the gene to assume a new function in the cell. This view was first established by Susumu Ohno. Данное издание представляет собой компиляцию...

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