Scientific Evaluation of Forensic Biology & Serology Technology in the 21st Century. By GOWTHAM T - Volunteer of C.A.S.E. 23 Official. The document explores the rapid advancements in forensic biology and serology over the past two decades, emphasizing their growing importance in solving crimes through the examination of biological evidence. Evolution and Impact Forensic biology analyzes biological materials including blood, saliva, and DNA to tie suspects to crime scenes. Serology, on the other hand, examines body fluids to identify antigens and antibodies. Traditional procedures such as blood typing and serological testing have developed over time into very accurate DNA profiling approaches. DNA profiling, particularly Polymerase Chain Reaction (PCR) amplification and Short Tandem Repeat (STR) analysis, has transformed criminal investigation by delivering precise identifications even from damaged or limited materials. ...