Backcrossing

Backcrossing is a crossing of a hybrid with one of its parents or an individual genetically similar to its parent, to achieve offspring with a genetic identity closer to that of the parent. It is used in horticulture, animal breeding, and production of gene knockout organisms.

Backcrossed hybrids are sometimes described with acronym "BC"; for example, an F1 hybrid crossed with one of its parents (or a genetically similar individual) can be termed a BC1 hybrid, and a further cross of the BC1 hybrid to the same parent (or a genetically similar individual) produces a BC2 hybrid.^[1]

^ Schweitzer, J.A.; Martinsen, G.D.; Whitham, T.G. (2002). "Cottonwood hybrids gain fitness traits of both parents: a mechanism for their long-term persistence?". American Journal of Botany. 89 (6): 981–990. doi:10.3732/ajb.89.6.981. PMID 21665697.

[1] Schweitzer, J.A.; Martinsen, G.D.; Whitham, T.G. (2002). "Cottonwood hybrids gain fitness traits of both parents: a mechanism for their long-term persistence?". American Journal of Botany. 89 (6): 981–990. doi:10.3732/ajb.89.6.981. PMID 21665697.

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