At more colleges, classes on genetics get personal

Bakir Hajdarevic didn't have to study for the most important test in a class last fall. He just had to spit — a lot, the Associated Press reports. The 19-year-old freshman at the University of Iowa took an honors seminar on personal genetics in which students had the option of sending saliva samples so a testing company could use DNA to unlock some of their most personal health and family
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