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backcross |
Also found in: Dictionary/thesaurus, Encyclopedia, Hutchinson | 0.02 sec. |
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backcross /back·cross/ (bak´kros) a mating between a heterozygote and a homozygote. backcross Etymology: AS, baec + cruc, cross 1 a mating (cross) between a heterozygote and a homozygote. 2 an organism or strain produced by such a cross. See also testcross. backcross mating the crossbred offspring of a two-way cross back to one of the parent breeds. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Once the Rag1 gene was discovered, Syngenta was able to successfully transfer it by using multiple backcrosses into elite Midwestern varieties. After two more backcrosses, TACF had a tree which was 15/16 American and 1/16 Chinese, which it hopes will uphold the beauty and adaptability of the American chestnut. Researchers will begin third backcrosses this year and are only one cross away from the end of their breeding program (about seven years). |
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