基因型为FFTt的个体产生的配子有:[ ]
A.FT和FT
B.Ft和Ft
C.FF和Tt
D.FT和Ft
答案:D
206. My cousin is a sailor. He's doing very well in the _______.
A.army
B.navy
C.air force
D.Boat
(3x3)2=______.