Answer:
When scientists take the genes of two different species and combine them, we call this genetic engineering.
Step-by-step explanation:
Genetic engineering is a collective term for the molecular techniques used to alter an organism's inheritance. The techniques range from inactivating a gene or introducing a small change in a gene (a single inheritance system) to transferring genes from one organism to another. A genetically modified organism is often referred to as a transgenic organism.
Genetic engineering is used for example in biotechnology and medicine. For example, insulin or human growth hormone is produced in bacteria and insect and / or herbicide resistant cereals are grown for commercial use.
Of course, in addition to genetic engineering being a technically difficult area, it also involves ethical aspects, especially in terms of human application and animal cloning.