【上位】 (genetics) an organism that is the offspring of genetically dissimilar parents or stock; especially offspring produced by breeding plants or animals of different varieties or breeds or species; "a mule is a cross between a horse and a donkey" 遺伝的に異質な親または群体の子孫である有機体。特に異種品種の動物・植物を交配させることにより作る子。
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