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NEETZoologyMolecular Basis of Inheritance

Read the following statements and choose the correct option: 1. Some amino acids are coded by more than one codon, hence the code is degenerate. 2. Lactose is the substrate for the enzyme beta-galactosidase and it regulates switching on and off of the operon. 3. Regulation of lac operon by operator is referred to as negative regulation. 4. Lac operon is only under the control of positive regulation

Options

  1. AAll are incorrect
  2. BOnly 1 is correct
  3. COnly 1 is incorrect
  4. DBoth 1 and 2 are correct

Correct answer

D. Both 1 and 2 are correct

Step-by-step solution

Some amino acids are coded by more than one codon, hence the code is degenerate. The codon is read in mRNA in a continuous fashion. There are no punctuations.

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