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Molecular Basis of Inheritance — BIOLOGY STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 ScienceBIOLOGYMolecular Basis of Inheritance1 Mark
MCQ
If more than one code designates the single amino acid it is:
  • A
    Degenaracy of codon
  • B
    Overlapping of codon
  • C
    Nonsense codons
  • D
    None of the above
✓

Answer

  1. Degenaracy of codon

Explanation:

In genetic code, three nucleotide bases code for one amino acid. With four bases, there are 64 possible combinations of three letter genetic code. Of these 64 genetic codes 61 represents 20 amino acids and three for stop signals. Thus there are more than one codon for more than one amino acid. This is called degeneracy of genetic code. The term "degenerate" simply refers to the fact that the translation from nucleotide codons to amino acids isn't one to one. Some parts of the genetic code are redundant.

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