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Which one of the following is wrongly matched?

1. Transcription – Writing information from DNA to tRNA.
2. Translation – Using information in mRNA to make protein.
3. Repressor protein – Binds to operator to stop enzyme synthesis.
4. Operon – Structural genes, operator and promoter.

Correct answer: Transcription – Writing information from DNA to tRNA.

Solution

The wrongly matched pair is A because transcription is the process of copying information from DNA into RNA, specifically mRNA (or other RNA types), not into tRNA. The other options correctly describe translation, repressor action, and the basic components of an operon.

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