The correct option is D DNA fingerprinting - DNA profiling
DNA fingerprinting is technically called DNA profiling.
Gene pooling is the total gene present in a population. Genome is the total genetic constitution of an organism.
Genome is the total genetic constitution of an organism.
Codon is the basic unit of a 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