The genetic modification introduced into the organism from which the BioMaterial was derived. Examples of genetic variation include specification of a transgene or the gene knocked-out [MGED Ontology Definition
Genetic variation is the variation in the genetic material of a population, and includes the nuclear, mitochodrial, ribosomal genomes as well as the genomes of other organelles. New genetic variation is caused by genetic mutation, which may take the form of recombination, migration and/or alterations in the karyotype (the number, shape, size and internal arrangement of the chromosomes). Genetic drift is a statistical measure of the rate of genetic variation in a population.