A new round of DNA testing will be allowed for just one piece of evidence in the case of Scott Peterson, the California man convicted in 2004 of the 2002 murders of his pregnant wife Laci and their unborn son. The Innocence Project in Los Angeles has taken up Peterson’s case, and the group requested new DNA testing for more than a dozen pieces of evidence from the original investigation, CBS News reports. The judge on Wednesday largely denied that motion, however, with one exception: the 15.5-inch-long piece of duct tape that was recovered from Laci Peterson’s pants when her autopsy was done, …