What you will need to learn:

(a) The Human Body and Health
The appearance and way in which the body works are determined by genes. An understanding of DNA and the mechanism of inheritance is important for understanding the origins of some disorders and in other situations such as paternity cases.

You need to:
20. know that cystic fibrosis is an inherited disease which causes the production of thick mucus which blocks the bronchioles. Gene therapy has been tried but there are difficulties in targeting appropriate cells and there may be side effects.