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1. Oxford Dictionary

   reciprocal cross

   • n.
     a pair of crosses between a male of one strain and a female of another, and vice versa.

   • noun: reciprocal cross, plural noun: reciprocal crosses

2. • 更多解釋

   reciprocal cross

   • IPA[rəˈsiprəkəl]

   • n.
     a pair of crosses between a male of one strain and a female of another, and vice versa.

   Oxford American Dictionary