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Molecular Basis of Inheritance — BIOLOGY STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceBIOLOGYMolecular Basis of Inheritance1 Mark
MCQ
All the terminator codons begin with which nitrogenous base?
  • A
    Adenine
  • B
    Uracil
  • C
    Guanine
  • D
    Cytosine
✓

Answer

  1. Uracil

Explanation:

There are three terminator codons - UAG, UGA, UAA. In the genetic code, a stop codon (or termination codon) is a nucleotide triplet within messenger RNA that signals a termination of translation. All of them begin with uracil. 

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