PROSECUTION BEGINS DNA TESTIMONY

The prosecution in theO.J. Simpson trialtoday began laying the groundwork for the crucial DNA testimony in the case that may establish thetrail of bloodtying Simpson to the crime scene. Dr. Robin Cotton, director of the nation's largest independent DNA forensic laboratory, gave jurors whatTIME Los Angeles correspondent James Willwerthcalls "a very user-friendly lesson on what DNA is and how DNA testing is done." Their purpose, says Willwerth, is "to demonstrate the DNA testing is science rather than voodoo," as the defense will assert.