In the context of genetic modification, a vector is a vehicle used to transfer genetic material into a host cell. Vectors can be derived from various sources, including plasmids, viruses, or artificial constructs. They are essential tools in biotechnology, particularly in creating genetically modified organisms (GMOs). By delivering specific genes into target cells, vectors facilitate the introduction of new traits, such as disease resistance or enhanced growth. The effectiveness of a vector is vital for the success of genetic engineering projects, impacting both research and agricultural applications.