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State the Difference Between the Structural Genes in a Transcription Unit of Prokaryotes and Eukaryotes. - Biology

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State the difference between the structural genes in a Transcription Unit of Prokaryotes and Eukaryotes.

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Solution

(a) In prokaryotes, the structural genes are polycistronic and continuous, whereas in eukaryotes, the structural genes are monocistronic and split.

(b) In prokaryotes, there is a single DNA-dependent RNA polymerase which synthesises all the types of RNAs (mRNA, tRNA and rRNA), whereas eukaryotes have three RNA polymerases—Pol I, Pol II and Pol III—to synthesise different types of RNAs.

Concept: Protein synthesis - Transcription - Transcription Unit and the Gene
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