Q27 / 180 · AIIMS 2003 · Botany

Which one of the following pairs of terms / names mean one and the same thing?

  • A
    Gene pool - genome
  • B
    Codon - gene
  • C
    Cistron - triplet
  • Correct answer
    D
    DNA fingerprinting - DNA profiling

Solution

Gene pool is the total gene present in a population. Genome is the total genetic constitution of an organism. Codon is the basic unit of genetic code, a sequence of three adjacent nucleotide in DNA or $m$ RNA that code for an amino acid. Gene is the basic unit of heredity, a sequence of DNA nucleotide that encodes a protein. Cistron is a segment of DNA nucleotides that codes for a polypeptide chain. Triplet is a three nucleotides sequence coding for an amino acid. Therefore, $$ \begin{aligned} & \text { codon } \approx \text { triplet } \\ & \text { cistron } \approx \text { gene } \end{aligned} $$ DNA fingerprinting is technically called DNA profiling or DNA typing.

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

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