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Common Ancestry: It's in our DNA [Internet]. Salt Lake City (UT): Genetic Science Learning Center; 2017 [cited 2021 Mar 27] Available from https://learn.genetics.utah.edu/content/evolution/common/

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Illustration of the structural components and building blocks of DNA (deoxyribonucleic acid) and RNA (ribonucleic acid). | Life science, biomedical, caricatures, cartoons, editorial and general stock art illustration by Dave Carlson

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When DNA is replicated by DNA polymerases, deoxyribonucleotides are incorporated, whereas when DNA is transcribed by RNA polymerases, ribonucleotides are used. The misincorporation of ribonucleotides into DNA occurs frequently during DNA replication ([ 1 ][1]). However, the presence of ribonucleotides in DNA makes it more fragile and threatens genome stability that needs to be maintained for faithful transmission of genetic information.

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RNAi: Slicing, dicing and serving your cells - Alex Dainis

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RNA, the genetic messenger, makes sure the DNA recipe gives your cells exactly what they ordered. But sometimes that means inhibiting some other RNA that got the recipe wrong. This process is called RNA interference (RNAi), and it acts as a self-correcting system within the complicated genetic kitchen of your body. Alex Dainis explains the importance -- and exciting potential -- of RNAi.