Entry-level forensic science jobs combine the work of many fields, including chemical and biological analysis, crime scene investigation, laboratory technician work, and medical examination. If you are a CSI forensic scientist, for example, your responsibilities are to help with criminal investigations by collecting evidence at the scene of a crime and analyzing it. Your duties include searching for fingerprints, bagging evidence that might have DNA on it, photographing the scene with special cameras, and taking every sample to a lab to investigate further. Upon analysis, you report your findings to investigators.