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A gene is a

  • A.segment of DNA carrying codons specifying for a particular polypeptide
  • B.triple nucleotide group, coding one specific amino acid
  • C.triple nucleotide group, not coding one specific amino acid
  • D.segment of RNA

Answer: A

Correct answer: segment of DNA carrying codons specifying for a particular polypeptide

A gene is a stretch of DNA whose sequence of codons specifies one polypeptide (or one functional RNA). A single triplet is a codon, not a gene, and it specifies one amino acid.

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