Efforts to correct errors in gene function have been tried for the past few decades but most have not shown consistent positive outcomes in clinical...

1.     Efforts to correct errors in gene function have been tried for the past few decades but most have not shown consistent positive outcomes in clinical applications. However, in the past 10 years, the discovery of CRISPR-CAS9 system appears to introduce new exciting ways to correct errors in genes and paves the way for new approaches in gene editing. For this part, answer the following questions: