某种植物的花色受两对基因(A-a，B-b)的支配，这两对基因位于非 同源染色体上。其表现型和基因型的对应关系如下表，请回答：
(1)基因型为aaBB的白花植株与AAbb的红花植株杂交，F1的表现型为___；F1自交，F2的表现型的分离比为___。
(2)基因型为____的红花植株与基因型为____的白花植株杂交，后代全为红花。
(1)紫花 9:3:4
(2)AAbb aabb
用所给短语的适当形式填空。(10分)
2. I _________Max .he can to be our monitor. Because he is very excellent (优秀) 3. There are _______ seven hundred students in our sc  hool.4. Who _________ the little boy just now? He’s crying all the time. 5. You are not st  rong, so you should learn_________ yourself well.6. Don’t _______ the fish __________ the water. They can’t live without water. 7. The robber tried _________________in the house but was caught soon after. 8. Most children ___________ snakes. 9. .Betty is generous. she ___________share things with her friends. 10.She is kind and never ____________ about anyone. |
neself; at least; fri
ghten