Which of the following best defines genomics?

A. The study of cellular protein structures

B. A mechanism used in DNA fingerprinting

C. A sequence of mutant genes

D. The study of the genomes of organisms

A genome is the complete set of a organisms genes.

Genomics is a zone inside of hereditary qualities that concerns the sequencing and investigation of a life form's genome.

So it has to be D. The study of the genomes of organisms