"The rind comes from wild South American varieties. The yellow gene is dominant, but its inheritance is unstable. Even if the parent generation is successful, the next generation will not necessarily have a yellow rind."
「果皮是採自南美洲的野生品種，雖然黃色是顯性基因，但在遺傳上並不穩定；即使母代試驗成功，子代卻不一定呈現黃色。」