What is Biology? Biology is the science of life. Its name is derived from the Greek words "bios" (life) and "logos" (study). Biologists study the structure, function, growth, origin, evolution and distribution of living organisms. Biology has gone through some revolutions and it's divided into three big era. What are they? 1. Discovery of DNA In this revolution, long molecule that contains people's unique genetic code or known as DNA was found. It was identified by James Watson, The Father of DNA. He used X-Ray to know that DNA has a double helix shape. 2. Human Genome Project Move on to the next bio-revolution. Generally, genome is the genetic material of an organism that consists of DNA. In this era, many scientists worked on their lab to determine the different between organism's DNA to know the relation between each others, it's called DNA Sequence. It was a bit hard to find out at that time, cause technology hadn't developed yet so