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Solution


Q.

The equivalent of a structural gene is                  [2016]
1 muton  
2 cistron  
3 operon  
4 recon  

Ans.

(2)

Cistron (or gene) is a length of DNA that contains the information for coding a specific polypeptide chain or a functional RNA molecule (i.e., transfer RNA or ribosomal RNA). Hence, cistron is a unit of function. Currently such a gene is called structural gene.