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Interactions 2 Listening/Speaking, 4/e
Judith Tanka, University of California, Los Angeles
Lida R. Baker, University of California, Los Angeles

Mapping the Human Genome

Announcer: Within each of us are the genes that define the characteristics that make us unique. Who has blue eyes or dark hair? Who is prone to developing heart disease or cancer? Now scientists have mapped the chemical sequence for human DNA. It's a first draft in what scientists call "the book of life." Two groups, an international consortium of scientists and a private company named Celera, working independently to achieve the same goal--to identify the chemicals of the approximately 80,000 genes that make up the human body. Mapping the genetic code is first step to figuring out which genes lead to which diseases. That means cures for diseases like breast cancer and leukemia may not be far off. But scientists warn, with discovery comes the potential for discrimination--the fear that outside groups will use genetic information to turn people down for jobs or health insurance.









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