INDIANAPOLIS (AP) _ A judge has ruled that lawyers defending a former Indiana state trooper on charges he killed his wife and two children can use DNA evidence they say suggests a different man committed the killings.
 
  Special Judge Jon Dartt issued the ruling Friday, three days before David Camm's third murder trial is scheduled to begin in Rockport.
 
  An expert testified last week that Charles Boney's DNA was found on the shirt of Camm's wife, Kimberly, on two places on her underwear, and on the torso of 5-year-old Jill Camm. That testimony supported the defense team's argument that Boney committed the slayings. 
 
  Boney is serving a 225-year sentence for murder and conspiracy in the 2000 slayings.
 
  Dartt said the prosecution's argument went to how jurors should consider the evidence, not its admissibility.