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Molecular Basis Of Inheritance

Question
CBSEENBI12047047
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Which one of the following pairs of terms/ names mean one and the same thing?

  • Gene pool - genome

  • Codon - gene

  • Cistron - triplet

  • DNA fingerprinting - DNA profiling

Solution

D.

DNA fingerprinting - DNA profiling

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 mRNA 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, codon ≈ triplet
                cistron ≈ gene
DNA fingerprinting is technically called DNA profiling or DNA typing.

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