Why Study the Human Genome?

Every living organism has a genome — a complete set of DNA instructions. The human genome can be compared to a very large instruction book that explains how our bodies are built and how they work. It tells cells how to grow, develop, and react to the environment.

In the early 1990s, scientists already had advanced microscopes and genetic tools, but they had never read the full human genome as one complete sequence. This is why the Human Genome Project (HGP) was so important — its main goal was to sequence all human DNA for the first time (NHGRI, 2024).

By studying the human genome, scientists can better understand why some people develop diseases such as cancer, diabetes, or inherited genetic disorders. This knowledge also helps researchers improve treatments and develop new medicines. In addition, genome research helps explain human evolution and why every person is genetically unique (Green & Guyer, 2015).