Final answer:
Electroporation is a biotechnological method used by biologists to introduce foreign DNA into eukaryotic cells, which is essential for applications like gene therapy and molecular cloning.
Step-by-step explanation:
A biologist would most likely use the technique of electroporation to introduce foreign DNA into cells. Electroporation is a method used for transfecting cells, especially eukaryotic cells, which are generally not amenable to taking up foreign DNA and maintaining plasmids naturally. The process involves applying an electric pulse to the cells to form transient pores in the cell membrane, allowing the insertion of DNA. This is crucial in various biotechnological applications, including gene therapy to cure inheritable diseases and in molecular cloning. By harnessing this technique, recombinant DNA technology can engineer microbial cells to produce foreign proteins, significantly advancing molecular biology research.