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Backcross Breeding Cannabis

Enables breeders to transfer a desired trait such as a transgene from one variety (donor parent, DP) into the favored genetic background of another (recurrent parent, RP). If the trait of interest is produced by a dominant gene, this process involves four rounds of backcrossing within seven seasons.

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

Back cross- When F1 individuals are crossed with one of the two parents from which they were derived, then such a cross is called a back cross. ... Test cross- A test cross is a cross used to test whether an individual is homozygous ie pure or heterozygous ie hybrid. It is always crossed with a recessive parent.

So you take WW and bubble gum breed them togethere to get the new strain WWxBgum, then you take WWxbgum and breed it back with either WW or bubble gum, the result of this is strain like this WWx(wwxbgum) this is a Bx1 bx2 is when you take WWx(wwxbgum) and breed again with WW so you have WWx(wwx(wwxbgum))

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