Transgenic Organism: An organism that contains DNA from another species. Transgenic organisms are a type of GMO.
Selective Breeding/ Artificial Selection: A process used by humans to develop new organisms with specific characteristics by selecting which of an animal's or plant's traits will be passed on to its offspring.
Recombinant DNA Technology: The technology used in genetic engineering where DNA molecules from different sources are combined into one molecule to create a new set of genes. This DNA is then transferred into an organism, giving it modified or novel genes.