Option 1: Police investigating the scene of a sexual assault recover a large blanket that they believe may contain useful physical evidence. They take it to the laboratory for a test for the presence of semen. The serologist asks if the investigator knows of Respond to one of the following:
anything that might recently have been spilled on the blanket. The investigator reports that an overturned bowl of grapes and watermelon was found on the scene, as well as broken glass that had contained wine. The scientist selects and administers the best test for analyzing that blanket. The blanket shows a positive reaction after three minutes of the completion of the test. What test was probably used and what was the conclusion? Explain your answer.