NEET Botany Molecular Basis of Inheritance Questions Solved

NEET - 2016

The equivalent of a structural gene is

(1) muton

(2) cistron

(3) operon

(4) recon

(2) Cistron is the segment of DNA which determines the synthesis of complete polypeptide. Thus, it is considered as equiaveltn to a structural gene. Therefore, option (2) is correct and others are incorrect.

Concept Enhancer - Eukaryotic structural gene is monocistronic whereas prokaryotic structural gene is polycistronic.

Muton - Smallest unit of DNA in which mutation occurs.

Operon - Functional unit of genomic DNA containing a cluster of genes under condtrol of single promoter.

Recon - Smallest unit of DNA for recombination.

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