GMO is a subclass of class of living thing.

GMO is a subclass of mutant.

A genetically modified organism (GMO) is any organism whose genetic material has been altered using genetic engineering techniques.

The exact definition of a genetically modified organism and what constitutes genetic engineering varies, with the most common being an organism altered in a way that "does not occur naturally by mating and/or natural recombination".

A wide variety of organisms have been genetically modified (GM), including animals, plants, and microorganisms.

Genetic modification can include the introduction of new genes or enhancing, altering, or knocking out endogenous genes.

In some genetic modifications, genes are transferred within the same species, across species (creating transgenic organisms), and even across kingdoms.

Creating a genetically modified organism is a multi-step process.

Genetic engineers must isolate the gene they wish to insert into the host organism and combine it with other genetic elements, including a promoter and terminator region and often a selectable marker.

A number of techniques are available for inserting the isolated gene into the host genome.

Recent advancements using genome editing techniques, notably CRISPR, have made the production of GMOs much simpler.

Herbert Boyer and Stanley Cohen made the first genetically modified organism in 1973, a bacterium resistant to the antibiotic kanamycin.