Functional Genomics-Functional genomics may be defined as determination of the function of, ultimately, all the gene products encoded by the genome of an organism. This includes answers to the questions, how is a gene expressed, how is its product related in sequence and structure to products of other genes of the same organism, and how does it interact with them?

These questions can be answered by studying the following:

(i) when and where particular genes are expressed (expression profiling).

(ii) The functions of specific genes by selectively mutating the desired genes, and