Final answer:
The study of whole genomes, including genes and their functions, is known as genomics. It is part of the wider fields of study that also includes proteomics and transcriptomics, each dealing with different aspects of cellular function and genetic information. Hence, option (2) is correct.
Step-by-step explanation:
The study of whole genomes, including genes and their functions, is known as genomics. Genomics is a comprehensive analysis that covers the complete set of genes, their nucleotide sequence, organization, and how these genes function within the genome. It has significant implications for medical advancements, the understanding of infectious organisms, and even environmental applications.
Proteomics is another related field that studies the entire set of proteins expressed by a cell or organism, giving insights into the dynamic nature of proteomes that change according to different conditions or cell types. Whereas transcriptomics focuses on the collection of mRNA molecules produced by cells, shedding light on gene expression patterns and the intricate web of gene regulation.