Criminalist Cathy is collecting evidence from the victim of a sexual assault. She places a sheet on the floor, asks the victim to disrobe, and places the clothing in a paper bag. After collecting pubic combings and pubic hair samples, she takes two vaginal swabs, which she allows to air-dry before packaging. Finally she collects blood, urine, and scalp hair samples from the victim. What mistakes, if any, did Cathy make in collecting this evidence?
A woman reports being mugged by a masked assailant, whom she scratched on the arm during a struggle. The victim gives the police a good description of her attacker, but she is not sure whether the assailant was male or female. Describe the steps and procedures you might use to determine the sex of the attacker.
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