Experts are disputing claims by John Ramsey's congressional campaign that investigators have the DNA of the person who murdered his daughter, JonBenet Ramsey.Ramsey, who now resides in Charlevoix, Mich., with his wife Patsy and son Burke, announced May 11 that he was a Republican candidate for the Michigan State Legislature.Ramsey's campaign Web site has a section called "Family Tragedy/Update" which makes the assertion that forensic experts have successfully identified the final DNA marker from a sample found in JonBenet's underwear and that the family has been advised the sample came her murderer.That claim is disputed by the forensic scientist who developed the genetic profile from that sample.The scientist, who talked to the Rocky Mountain News, told them it is possible the sample came from the killer, but that there are other possibilities that explain how the sample got in the underwear."You have DNA that's male, but it doesn't necessarily mean it's the killer's," the scientist told the News. "It could be innocent. It could be from the (undergarment's) manufacturer. It could be a lot of things. Of course it's important. But it's not more important than the rest of the investigation."The scientist asked that his name not be published, according to the newspaper.A second forensics expert, who the newspaper said is close to the case, also agreed that the significance of the DNA sample is open to interpretation.Atlanta attorney Lin Wood, who represented the Ramsey family since the murder, told the News that he disagreed."Anyone in a law enforcement investigation who is searching for an innocent explanation for foreign male DNA found mixed in the victim's blood on her underwear is either incompetent or prejudiced to the point of being unqualified to participate in a fair and objective investigation," he told the newspaper.After the final genetic marker in the sample was identified, the genetic profile was entered into a national database maintained by the Federal Bureau of Investigation. So far, there has been no match for it.