Which major innovation in forensic science was pioneered by Dr. Leon Latts?

Dr. Leon Latts is best known for his pioneering work in serology, the study of blood and other bodily fluids in a forensic context. His contributions significantly enhanced the ability to analyze and identify blood types at crime scenes, which helped establish a foundational method for linking suspects or victims to criminal activities through biological evidence. Serology enables investigators to determine the presence of blood and other bodily fluids, analyze their characteristics, and provide critical information regarding the circumstances of a crime.

While other options represent important advancements in forensic science, they are either developed by other scientists or involve different methodologies. DNA analysis, for instance, emerged later and is based on genetic profiling, which was not the primary focus of Dr. Latts. Ballistics involves the examination of firearms and ammunition, whereas fingerprinting relies on the unique patterns found on individuals' fingertips, pioneered by others in the field. Dr. Latts' work in serology sits at a pivotal intersection of biology and criminal investigation, establishing systematic approaches that are still foundational in forensic science today.