The word Biotechnology is formed from bios meaning life and technology meaning technology. Biotechnology means technology of life or biotechnology. Biotechnology is a modern and applied branch of science. Biotechnology is the method of making beneficial and usable goods for human beings by following and applying scientific and engineering principles through appropriate use of organisms. Since ancient times, people have been making curd and chickpeas from milk, fermented liquor from sugars, vinegar or alcohol from molasses, antibiotics from microorganisms, etc. At present, transgenic organisms, synthetic genes, polymerase chain etc. are being produced through gene technology. Because tissue culture is done entirely in a glass dish, it is called in-vitro culture.