Deduction of the order of sexual assaults by DNA analysis of two condoms.
Differential DNA extraction procedures were performed on two condoms found at a rape scene. One of the condoms was recovered intact (A), while the second condom (B) had apparently ruptured during the alleged attack. Two related suspects (cousins 1 & 2) were identified as the potential semen donors. Condom B contained DNA from the female and from one of the suspects. Condom A contained DNA from the suspect identified on condom B and from an unidentified individual. The presence of DNA from suspect 2 on both condoms led to the deduction that his sexual activity preceded that of the unidentified suspect. The ability to determine such a sequence of events using DNA typing is unusual.
Wegel
J G
JG
Georgia Bureau of Investigation, Division of Forensic Sciences, Decatur.
Herrin
G
G
D017280:Condoms; D016172:DNA Fingerprinting / Q000379:methods*; D005260:Female; D005554:Forensic Medicine / Q000379:methods*; D006801:Humans; D008297:Male; D011902:Rape