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Here’s another analogy:If DNA is the blueprint for proteins,RNA is the contractor.It makes single-stranded copies of DNA’s genes,called mRNA,which tell the cell to produce proteins.In 1998,scientists identified RNAi,a mechanism that primitive organisms use to detect and destroy virus’s double-stranded RNA and any viral mRNA.Mammals’ immune systems made RNAi’s antiviral function irrelevant (although all vertebrates,including humans,still use RNAi to regulate mRNA activity),but researchers found that introducing small segments of double-stranded RNA to cells could trigger the ancient mechanism and selectively halt the production of specific proteins.
Here’s another analogy:If DNA is the blueprint for proteins,RNA is the contractor.It makes single-stranded copies of DNA’s genes,called mRNA,which tell the cell to produce proteins.In 1998,scientists identified RNAi,a mechanism that primitive organisms use to detect and destroy virus’s double-stranded RNA and any viral mRNA.Mammals’ immune systems made RNAi’s antiviral function irrelevant (although all vertebrates,including humans,still use RNAi to regulate mRNA activity),but researchers found that introducing small segments of double-stranded RNA to cells could trigger the ancient mechanism and selectively halt the production of specific proteins.
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