Which field of biotechnology is used for criminal identification through hair analysis?

The field of biotechnology that is focused on criminal identification through hair analysis is medical forensics. This area applies biological science principles to legal matters, particularly in the analysis of biological samples such as hair, blood, and other tissues to assist in solving crimes. Medical forensics utilizes techniques such as DNA profiling from hair samples, which can provide crucial evidence in criminal investigations and help identify suspects or victims.

In contrast, medical engineering typically involves the development of technologies and devices for healthcare solutions, not directly related to crime scene investigations. Environmental biotechnology focuses on the application of biotechnological methods to environmental issues, such as waste treatment and bioremediation, and does not pertain to forensic applications. Agricultural biotechnology is concerned with improving agricultural production through genetic engineering and other technological advancements, making it unrelated to criminal identification.