Cells interact with each other in order to form tissues, tissues form organs and organs form organism by cooperating with each other. All of the genes that make up an organism are called ‘genom’; we owe so much to our genoms to be who we are right now. The code that tells our cells how to act is our genoms; in other words, it is our DNA chains. The discovery of DNA has changed the century. Genetic studies reached out to copying the human genome. Currently, at the center of genetic science there are debates on a method called CRISPR, which enables changing the DNA.