Scientists Discover Small RNAs That Regulate Gene Expression And Protect The Genome

RNA is best known as a working copy of the DNA sequence of genes. In this role, it's a carrier of the genes' instructions to the cell, which manufactures proteins according to information in the RNA molecule. But molecular biologists have increasingly realized that many RNA snippets -- so-called small RNAs -- also directly influence which genes make proteins, and in some cases, how much protein.

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