Reverse transcriptase is an enzyme that converts RNA to DNA. It is a specialized skill used in molecular biology, genetic research, and medical diagnostics. Reverse transcriptase is essential for creating complementary DNA (cDNA) from RNA templates and is commonly used in techniques such as reverse transcription polymerase chain reaction (RT-PCR) for gene expression analysis. It is a critical tool in studying cellular processes, genetic disorders, and developing new medical therapies.