In this case, a forensic biologist would examine the following:
1. The blood on the broken plate of glass at the storefront: By analyzing the blood found at the scene, a forensic biologist can determine if it belongs to the suspect or another individual involved in the crime. DNA analysis can help link the blood to a specific person.
2. The smartphone that was dropped at the scene: Forensic analysis of the smartphone can provide valuable information such as call records, messages, photos, or other data that might help identify the suspect or provide clues about their involvement in the robbery.
3. The site of the small explosion near the cash register: Examining the remnants of the explosion can help determine the type of explosive used, which could lead to identifying the perpetrator or provide insights into their motives or background.
Forensic biologists may also consider examining other evidence not listed in the question, such as fingerprints, DNA traces, or any biological material left at the scene. Additionally, analyzing CCTV footage can provide crucial visual evidence that complements the biological analysis conducted by the forensic biologist.