Octopuses and squid are masters of RNA editing while leaving DNA intact

Many writers grouse when an editor makes a change in a story, but the consequences of changing a single word usually aren’t that dire.

Not so with genetic instructions for making proteins. Even a small change can prevent a protein from doing its job properly, with possibly deadly consequences. Only occasionally is a change beneficial. It seems wisest to preserve genetic instructions as they are written. Unless you’re an octopus.

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