Fatal Familial Insomnia is passed on through generations. The chances of a parent passing on the genetic mutation is 50%, as stated by “rarediseases.info.nih.gov” updated in 2016. Since FFI is passed on throughout generations, if a parent has two children, one of them is almost guaranteed to get FFI, except for in rare cases. The mutation occurs in the 20th chromosome which leads to other problems in th body. FFI doesn’t lead straight to death, there are multiple things leading up to the final stage. In most cases, a person gets FFI from an infected parent. If two parents produce offspring and one has FFI, the child has a 50% chance of getting the same genetic disorder. For every child after the first one, the chance of one of their children
