What problems could mapping the human genome cause?
So far, no problems have been found. Knowledge is not a problem, and the knowledge of the human genome is one of the great achievements of science. What is done with the knowledge may be another thing. I think that the danger is the denial of health coverage to an individual whose genome contains genes that may cause disease. This is a particular problem in the U.S. where health insurance is a profit making business, and any indication of future health problems may disqualify a patient from getting insurance. This could be solved be a national universal health insurance system that would not discriminate against those who are ill or may become so.
