What is a cistron in genetics?

What is a cistron in genetics?
  1. A segment of DNA coding for a polypeptide
  2. A unit of inheritance
  3. A segment of DNA that codes for a mRNA molecule
  4. A DNA sequence coding for tRNA or rRNA

Solution

A cistron is defined as a segment of DNA coding for a polypeptide. This definition is used to define the structural gene in a transcription unit.

Asked in: NCERT

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