Mice in a lab experiment inherited the effects of an aberrant gene without inheriting the gene itself, a bizarre-sounding result that may someday help scientists understand aspects of diabetes, infertility and other problems. For the study, reported in Thursday\'s issue of the journal Nature, scientists produced mice that carried one normal copy of a particular gene and one aberrant copy. Stephen Krawetz, Wayne State University\'s School of Medicine, noted that the discovery may play a role in unexplained male infertility.