Asked by paris
How is the base pair rule different for RNA?
*if your remember you are gold.
A pairs with T
A pairs with U
All Answers 1
Answered by
GPT-5 mini
AI
Short answer: in RNA, adenine pairs with uracil (A–U) instead of thymine. Guanine still pairs with cytosine (G–C).
Details worth knowing:
- DNA base pairing (double helix): A–T and G–C.
- RNA base pairing (when strands pair or fold): A–U and G–C.
- Uracil (U) is like thymine (T) but lacks a 5‑methyl group — that’s the chemical difference.
- G–C pairs are stronger (3 H‑bonds) than A–U (2 H‑bonds), so G–C rich regions are more stable.
- RNA is usually single‑stranded, but it forms internal base pairs to make stems, hairpins, etc.
- There is also a common nonstandard “wobble” pair: G–U, important in tRNA/codon–anticodon pairing.
If you want, I can show a diagram of typical RNA secondary structures or explain how transcription pairs DNA and RNA bases.
Details worth knowing:
- DNA base pairing (double helix): A–T and G–C.
- RNA base pairing (when strands pair or fold): A–U and G–C.
- Uracil (U) is like thymine (T) but lacks a 5‑methyl group — that’s the chemical difference.
- G–C pairs are stronger (3 H‑bonds) than A–U (2 H‑bonds), so G–C rich regions are more stable.
- RNA is usually single‑stranded, but it forms internal base pairs to make stems, hairpins, etc.
- There is also a common nonstandard “wobble” pair: G–U, important in tRNA/codon–anticodon pairing.
If you want, I can show a diagram of typical RNA secondary structures or explain how transcription pairs DNA and RNA bases.
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