Answer:
1. False
2. Individual characteristics
Explanation:
1. The correct answer is radial fractures. Whenever glass is struck, regardless of what the cause of it breaking (e.g. stone or a bullet) is, this type of fractures, which circle the hole and radiate outward and resemble the spoke of a wheel, occurs first. Concentric fractures, which are in the shape of circular lines, follow.
2. There are two kinds of characteristics of evidence - class and individual characteristics. Class characteristics are not unique to a certain bit of evidence but place it into a group of objects. For example, a hammer has a distinctive shape and typical size. Individual characteristics are characteristics that are unique to a given object and narrow it down to an individual source.
When it comes to bullets, a caliber size is an example of a class characteristic. For example, if a murder victim got killed by a .45 caliber bullet, every .45 caliber gun is a possible murder weapon. But, every gun barrel is unique. Inside it, there may be imperfections or irregularities created in the process of production or by use, corrosion, or damage. These imperfections leave marks on bullets, making it possible to trace them to a specific gun.
