Define a cistron. Giving examples differentiate between monocistronic – InterviewSolution

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1.	Define a cistron. Giving examples differentiate between monocistronic and polycistronic unit.
Answer» A cistron is stretch of base sequences that codes for one polypeptide chain including adjacent control regions. It may also code for a tRNA, rRNA molecule or may perform other specific functions including regulating functions of other cistrons. This term has replaced the definition of a gene . Monocistronic transcription unit will have all the regulatory and coding sequences for a single polypeptide, Whereas polycistronic may have coding sequenes for more then one polypeptide.

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