Final answer:
Peter is a field investigator who collects evidence at crime scenes, and Jessica is a laboratory analyst who analyzes the evidence in a lab setting. Together, they are vital to the forensic science process, aiding in criminal investigations.
Step-by-step explanation:
Peter and Jessica represent two essential roles within the field of forensic science. Peter's role as a field investigator involves him visiting crime scenes where he is tasked with processing and collecting evidence.
This is a crucial step in the forensic process as it ensures that the physical proof of criminal activity is preserved accurately and systematically. Jessica, on the other hand, operates in a more controlled environment as a laboratory analyst. Her work centers around analyzing the evidence collected from the crime scene.
Utilizing advanced technical methods, such as DNA sequencing, Jessica can uncover vital information from biological samples like hair, blood, or other body fluids. Through their collaborative efforts, Peter and Jessica contribute significantly to solving crimes by providing the necessary scientific evidence to law enforcement and the courts.