DNA samples are small amounts of genetic material collected from an individual. These samples can be obtained from various sources, such as blood, saliva, hair, or skin cells. Scientists analyze DNA samples to study genetic information, which can help in areas like forensic science, ancestry research, and medical diagnostics. In forensic science, DNA samples play a crucial role in identifying individuals involved in crimes. By comparing DNA from a crime scene with samples from suspects or databases, investigators can determine potential matches. This process has revolutionized criminal investigations and has been instrumental in solving many cases.