Directions : In the following question more than one of the answers given may be correct. Select the correct answer and mark it according to the code:
Regulatory genes are the genes that (1) code for represser proteins (2) are transcribed continuously (3) are not contained in the operon they control (4) determine the primary structure of polypeptide chainA) 1, 2 and 3 are correct
B) 1 and 2 are correct
C) 2 and 4 are correct
D) 1 and 3 are correct
Correct Answer: A
Solution :
Regulatory genes are the genes responsible for the synthesis of a protein called represser. These are transcribed continuously and are not contained in the operon they control. Structural genes are those segments of DNA, which carry codes for the synthesis of proteins. These genes determine the primary structure of polypeptide chain by the coding of sequence of amino acids in them.
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