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🔬 Biology  ·  Molecular Basis of Inheritance  ·  NEET

Which feature of the genetic code means that a given codon always specifies the same amino acid?

Answer: Unambiguous nature.

  • A Degeneracy
  • B Universality
  • C Unambiguous nature
  • D Wobble

Correct answer: C. Unambiguous nature

Explanation: The code is unambiguous: a specific codon always codes for the same amino acid in a given organism, without alternative meanings.

The Replication Forkhelicase (unwinds fork)leading strand (continuous, 5'→3')lagging strand: Okazaki fragments (discontinuous)

Helicase unwinds the double helix at the replication fork; one new strand (leading) is synthesised continuously toward the fork, while the other (lagging) must be made in short, separate Okazaki fragments because DNA polymerase only adds nucleotides 5'→3'.

Concept context

DNA structure, replication, transcription, translation, the genetic code, and gene regulation (lac operon). The single most important chapter for NEET molecular biology.

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