1. A man is being accused of murder. He claims his identical twin is the real culprit. He also claims that the fingerprints the CSI's found aren't his, but his twins, who has the same fingerprints as him. Is this possible?

  2. A CSI team found a hair at a murder scene. The root of the hair is not attached. Can they identify it as male or female?

  3. There was an explosion at a manufacturing plant. The bodies were burned too badly to identify the victims by sight. What is the next most common way to identify the body in this situation?

  4. A CSI team responds to a body that was found dead in the woods off a major highway. How can they tell how long the body has been dead in this location?

  5. A skeleton is found inside an empty warehouse. What is the quickest way to determine the gender?

  6. Of the following options, which is the least reliable source of evidence?

  7. Are you a male or female CSI?