Final answer:
An expirated bloodstain pattern can show characteristics such as being colorful, faded, sharper, and curved.
Step-by-step explanation:
An expirated bloodstain pattern can exhibit several characteristics:
- Colorful: Freshly expelled blood may have a vibrant red color due to the presence of oxygen. Over time, the color may fade and change.
- Faded: As blood dries, the color can become lighter and less distinct.
- Sharper: The edges of an expirated bloodstain pattern may appear more defined compared to passive bloodstains, which can have more diffuse edges.
- Curved: Expirated bloodstain patterns may show curved shapes based on the airflow and the individual's breathing pattern at the time of the event.