Q167 / 200 · NEET 2003 · Zoology

Which one of the following triplet codes, is correctly matched with its specificity for an amino acid in protein synthesis or as 'start' or 'stop' codon?

  • A
    UCG - start
  • B
    UUU - stop
  • C
    UGU - leucine
  • Correct answer
    D
    UAC - tyrosine

Solution

Codon UAC is correctly matched as it codes for amino acid tyrosine. Stop codons are UAA, UAG and UGA. Start codon includes AUG (Methionine). UGC and UGU codes for cystine amino acid. UUC codes for phenylalanine. Codon UCG codes for serine.

Hence, the correct answer is option: 'D'.

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