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A genetically modified organism (GMO) and all subsequent identical clones resulting from a transformation process are called collectively a transformation event. If more than one gene from another organism has been transferred, the created GMO has stacked genes (or stacked traits), and is called a gene stacked event. [1]

Gene stacked events have become an important topic in plant breeding. Occasionally, researchers wish to transfer more than one trait (e.g. an insect resistance and a herbicide resistance) to a crop. Consequently, they need to transfer more than one gene, and do so either in one or in subsequent steps. This can be achieved either by genetic engineering or by conventional cross-breeding of GM plants with two different modifications.

References

  1. ^ Taverniers, Isabel; Papazova, Nina; Bertheau, Yves; De Loose, Marc; Holst-Jensen, Arne (October 2008). "Gene stacking in transgenic plants: towards compliance between definitions, terminology, and detection within the EU regulatory framework". Environmental Biosafety Research. 7 (4): 197–218. doi: 10.1051/ebr:2008018. ISSN  1635-7922. PMID  19081008. S2CID  5706535.