A:89
B:109
C:259
D:269
____×4<33 ____×5<46 8×____<66
果蝇红眼对白眼为显性,控制该性状的基因位于X染色体.果蝇缺失1条Ⅳ号染色体仍能正常生存和繁殖,缺失2条则致死.一对都缺失1条Ⅳ号染色体的杂合红眼雌果蝇与白眼雄果蝇杂交得F1,下列关于F1分析正确的是( )
一 Do you know boy over there?
一 Yes, he likes playing basketball very much.