Choose the best definition of genomics.

a. the study of the genomes of organisms.
b. a sequence of mutant genes.
c. a mechanism used in dna fingerprinting.
d. the study of cellular protein structures.

The best and most correct answer among the choices provided by your question is the first choice or letter A which is "The study of the genomes of organisms."

Genomics is a discipline in genetics that applies recombinant DNA, DNA sequencing methods, and bioinformatics to sequence, assemble, and analyze the function and structure of genomes (the complete set of DNA within a single cell of an organism).

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