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What is genomics and post genomics?
Genomics encompasses everything from sequencing genomes, ascribing functions to genes, and studying the structure of genes (gene architecture).
Post-genomics takes these techniques further, studying patterns in how genes are transcribed into messenger RNA, the chemical that carries the instructions for forming proteins (transcriptomics), in the way genes are expressed as proteins (proteomics), and in how they influence the chemicals that control our cellular biochemistry and metabolism (metabolomics).
By studying an individual's entire genome, we can see which genes are active at particular times and under different environmental conditions, and see how these affect outward characteristics.