RFLP stands for Restriction Fragment Length Polymorphism. It is a technique used in molecular biology to detect variations in DNA sequences. This technique involves the use of restriction enzymes to cleave DNA at specific recognition sites, creating fragments of varying lengths. The resulting DNA fragments are then separated by gel electrophoresis and visualized using a DNA stain. By comparing the banding pattern of different samples, researchers can identify variations in DNA sequences, such as single nucleotide polymorphisms (SNPs) or deletions/insertions, which can be useful in genetic mapping, forensic analysis, and disease diagnosis.