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Molecular Basis of Inheritance — BIOLOGY STD 12 Science — Question

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

Answer

Correct option: B.
Uracil
There are three terminator codons $- \text{UAG, UGA, UAA}$. In the genetic code, a stop codon $($or termination codon$)$ is a nucleotide triplet within messenger $\text{RNA}$ that signals a termination of translation. All of them begin with uracil.

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