user-avatar
thanhnga1503.01
2 năm trước
Câu 2: Ở cà chua gen A qui định ủa đỏ trội hoàn toàn, gen a qui định qủa vàng, gen B qui định qủa tròn trội hoàn toàn, gen b qui định qủa bầu dục . Các gen này phân li độc lập với nhau. a/ Xác định kết quả phép lai khi lai 2 cây cà chua AaBb x aaBb? b/ Cho quả đỏ, bầu dục lai với quả vàng tròn, xác định kết quả phép lai đó? có ai biết làm giúp e vs e đg cần gấp
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

I. Choose the best answer for the blank: 1. She sings ___________________ . A. beautiful B. nice C. beautifully D. lovely 2. Everybody wished ___________________ this activity. A. keep B. to keep C. keeping D. to keeping 3. He volunteered ___________________ us all in his car. A. take B. to take C. taking D. to taking 4. We can learn more about the undersea world ___________________ this invention. A. because B. for C. thanks to D. thanks for 5. The number of participants ___________________ every week. A. increase B. increases C. is increase D. are increase 6. I wish ___________________ to the teacher about that. A. explain B. to explain C. explaining D. to explaining 7. ___________________ is a person who swims underwater using special equipment. A. Diver B. Scientist C. Participant D. Cyclist 8. We are late, thanks to you. A. because B. because of C. instead D. instead of 9. He said that he would wait ___________________ me. A. for B. of C. to D. at 10. We plan ___________________ at about 3 o’clock. A. arrive B. to arrive C. arriving D. Both B & C 11. He ought to finish this homework before he plays tennis. A. must B. can C. should D. will 12. Do you like to take part in our club? A. play B. go C. join D. get 13. I am well awared ___________________ the problem. A. of B. for C. about D. on 14. I have to finish this question. A. must B. can C. should D. will 15. They take a walk intead ___________________ bicycle trips. A. take B. to take C. of take D. of taking 16. He is learning ___________________ in the lake. A. swim B. to swim C. swimming D. to swimming 17. ___________________ is a person who rides a bicycle. A. Scientist B. Cyclist C. Member D. Participant 18. Are you aware ___________________ the time? A. of B. from C. in D. for 19. There are ___________________ sports activities at school? A. much B. lot of C. different D. expensive 20. The number ___________________ participants increases every week. A. on B. of C. in D. at 21. Summer is ___________________ its way. A. on B. of C. in D. at 22. Swimming can be fun ___________________ accidents can happen. A. and B. but C. or D. so 23. This is a very ___________________ river. A. danger B. dangerous C. dangerously D. expensive 24. Nam speaks English very ___________________. A. well B. good C. fluently D. both A and C 25. Walking is a good sports activity. It makes us ___________________. A. health B. healthy C. healthily D. unhealthy 26. Lan wants Hoa ___________________ TV before dinner. A. watch B. watching C. to watch D. watches 27. Hoa always eats dinner ___________________ home. A. on B. in C. at D. with 28. She likes ___________________ time with her aunt and uncle at night. A. spend B. spends C. spending D. to spend 29. There is a cowboy film ___________________ at the New Age Theater. A. on B. in C. at D. about 30. You have to ___________________ your homework and prepare the lesson. A. do B. doing C. did D. will do 31. Are you free ___________________ Thursday? A. for B. about C. in D. on 32. We ought to ___________________ our Mom. A. help B. to help C. helped D. helping 33. No one went home until the TV programs ___________________. A. finish B. finishes C. finished D. finishing 34. How about ___________________ to music? A. listen B. listened C. to listen D. listening 35. Is baseball your ___________________ sports? A. good B. bad C. safe D. favorite Giúp mình với mng

2018 © Loga - Không Ngừng Sáng Tạo - Bùng Cháy Đam Mê
Loga Team