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Oct 16, 2019

How evolution builds genes from scratch

Posted by in category: evolution

De novo genes are even prompting a rethink of some portions of evolutionary theory. Conventional wisdom was that new genes tended to arise when existing ones are accidentally duplicated, blended with others or broken up, but some researchers now think that de novo genes could be quite common: some studies suggest at least one-tenth of genes could be made in this way; others estimate that more genes could emerge de novo than from gene duplication. Their existence blurs the bou…


Scientists long assumed that new genes appear when evolution tinkers with old ones. It turns out that natural selection is much more creative.

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