In nature, bacteria have a mechanism of an acquired immune system that allow them to cut section of virus DNA and incorporate it into its own, which will protect them from future viral infection. When bacteria identify the presence of a virus, they create two type of short RNA. One of them encloses a sequence that matches the one of the virus. The two RNA form a complex with a protein called Cas-9, an enzyme that can cut DNA. When the guided RNA or matching sequence, find its objective within the virus genome, Cas-9 cut the target DNA and …show more content…
One of the biggest problem of using CRISPR is that it can introduce off-target effects or change bits of the genome far from where scientists had intended. Any human embryo alter with CRISPR today would carry the risk that its genome had been changed in unexpected ways. Consequently, this technique will require a large number of stem cell in order to obtain the desirable genetic changes and carefully study and check for mistakes before producing an egg. For this reason, it is this experiments should be done in animals first and once all the problems associated with this technique are solve, maybe they can think about safely and responsible perform them in human cells