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Nature 421, 31-32 (2 January 2003) | doi:10.1038/421031a
Molecular evolution: Duplication, duplication
Axel Meyer
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Abstract
Duplicated genes are common in genomes, perhaps because they provide redundancy: if one copy is inactivated, the other can still work. A new study quantifies the effects of deleting 'singletons' and duplicated genes in yeast.
In fairy tales, things frequently come in twos: there are, for instance, two witches ruling over different parts of the land of Oz, two ugly sisters vying for the attention of Cinderella's prince, and so on and so on. And the phenomenon of duplication is not restricted to stories.
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