Biology › Section H · Gene expression and its regulation › Topic H.3
Eukaryotic transcription and RNA processing
Prokaryotes transcribe with one polymerase and translate immediately; eukaryotes keep their genes behind a nuclear membrane, split the work across three polymerases, and put every raw transcript through finishing school - caps, tails, and splicing - before it ever meets a ribosome.
In this topic
- Same process, new address
- The three RNA polymerases
- The mushroom poison test
- A bigger, busier promoter
- Transcription factors build the platform
- Elongation through chromatin, and three endings
- Finishing school: cap and tail
- Splicing out the interruptions
- Worked example: poison as a diagnostic
- Worked example: the off-by-one splice
- Common mistakes to avoid
- Key takeaways
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