Which best describes the process of making recombinant DNA? The isolated DNA is inserted into a mechanical vector for cloning. T
he DNA fragments are connected to a carrier to be inserted into a host. The sticky ends of fragmented DNA are joined with vector DNA. The isolated genes are joined by using restriction enzymes.
Rhizobia are a "group of soil bacteria that infect the roots of legumes to form root nodules". Rhizobia are found in the soil and after infection, produce nodules in the legume where they fix nitrogen gas (N2) from the atmosphere turning it into a more readily useful form of nitrogen.