Synthesis of a gene in a test tube and its transfer to a cell is called

The synthesis of a gene in a test tube and its transfer to a cell is called Genetic engineering.
Genetic engineering (also called genetic modification) is a process that uses laboratory-based technologies to alter the DNA makeup of an organism. This may involve changing a single base pair (A-T or C-G), deleting a region of DNA, or adding a new segment of DNA.