Can the use of DNA fingerprinting reduce the frequency of rape? Feminist technology assessment is used here to evaluate this new forensic technique, which distinguishes between persons by differences in DNA sequences in variable regions of their chromosomes. Although everyone's DNA pattern is unique, the statistical degrees of difference among sub-populations within ethnic and racial groups are not fully known. The technique is beset by laboratory errors, difficulties in interpretation, and lack of quality control. Policy analysts may also be troubled by the politics behind the harassment of expert witnesses, the rejection by journals of critical articles, the influence of the FBI on federal assessment reports, and the inequitable distribution of costs and benefits.