Most disorders or diseases are caused by a combination of environmental and genetic factors. However, some are caused solely by genetics. We are going to examine the latter in this discussion. You will be given the choice of a genetic disorder to research and write about, and then you will draw some conclusions based on this information. Choose one genetic disorder from the following list:

a. Sickle cell anemia
b. Cystic fibrosis
c. Duchenne muscular dystrophy
e. Achondroplasia