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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.
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Introgression, also known as introgressive hybridization, in genetics is the transfer of genetic material from one species into the gene pool of another by the repeated backcrossing of an interspecific hybrid with one of its parent species. Introgression is a long-term process, even when artificial; it may take many hybrid generations before ...
The process of backcrossing with parental species Introgressive hybridization, also known as introgression , is the flow of genetic material between divergent lineages via repeated backcrossing . In plants, this backcrossing occurs when an F 1 {\displaystyle F_{1}} generation hybrid breeds with one or both of its parental species.
Backcrossing in particular can negatively impact non-mallard species as oftentimes the hybrids breed with the more vulnerable species, leading to further genetic dilution. In captivity studies with the American black duck it has been discovered that the hybrids follow Haldane's rule with hybrid females often dying before they reach sexual maturity.
Introgression is gene transfer among taxa and is a result of hybridization, followed by repeated backcrossing with parental individuals. Introgressive hybridization occurs often in plants, and results in increased genetic variation, which can facilitate rapid response to climate change. [3]
Outcrossing can be a useful technique in animal breeding.The outcrossing breeder intends to remove the traits by using "new blood." With dominant traits, one can still see the expression of the traits and can remove those traits, whether one outcrosses, line breeds or inbreeds.
All commercial cultivars resemble strawberries more closely than they do Comarum.They are all vigorous, and produce runners profusely. 'Frel', also known as Pink Panda, [2] is a patented hybrid strawberry that is the result of crossing the garden strawberry Fragaria × ananassa subsp. cuneifolia (syn. Fragaria grandiflora) [3] with Marsh Cinquefoil, Comarum palustre (formerly Potentilla ...