Answer:
Transcriptomics.
Step-by-step explanation:
Transcriptomics may be defined as the field of biology that mainly deals with the study and collection of the mRNA molecules. Various techniques like DNA microarray and exon shuffling is used in transcriptomics.
Messenger RNA molecule are collected from the source that are produced by the cells. Transcriptomics helps the scientist to determine the similarities and differences in the gene expression pattern between the different cells.
Thus, the correct answer is option (2).