Part 1 of Essay
(CF) used to be considered a childhood disease, because people born with it rarely lived to reach adolescence. Now, with marked improvement in treatments—from physiotherapy and antibiotics that keep the lungs clear of mucus and microbes to enzyme supplements that aid digestion—many people with CF live into their thirties ....

Part 2 of Essay
.... is the most common genetic disorder in the white population (Hopkin, 1998). Almost every article or book about begins with a statement similar to the one above. People who have genetic disorders are born with them. The inherited genetic defect causes a chemical error in all the cells in their body (Silverstein, 1994; Wagner, Reynolds, Moran, Moss, Wine, Flotte, Gardner, 998; Shapiro, 1991; Drake, 1995). In children and adults with CF, a mistake in a single gene disables a type of protein that functions as an ion ....