17.有甲、乙、丙、丁、戊5只猫,其中甲、乙、丙都是短毛猫,丁和

17.有甲、乙、丙、丁、戊5只猫,其中甲、乙、丙都是短毛猫,丁和戊是长毛猫,甲、乙为雌猫,其余是雄猫。甲和戊的后代全是短毛猫,乙和丁的后代长毛猫和短毛猫均有。欲测定丙猫的基因型,最好选择

A.甲猫     B.乙猫     C.丁猫     D.戊猫

答案

B

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