Ở chuột , lông xám đuôi cong là 2 tính trạng trội so với lông trắng đuôi thẳng . Khi cho giao phối 2 dòng chuột thuần chủng có lông xám đuôi cong và lông trắng đuôi thẳng thu được F1 a) Lập sơ đồ lai của P và F1 b) Cho chuột F1 giao phối với chuột E thu được F2 có tỉ lệ : 90 chuột lông xám đuôi cong , 93 chuột lông xám đuôi thẳng :30 chuột lông trắng đuôi cong , 32 chuột lông thẳng đuôi trắng , Xác định kiểu gen chuột E . Lập sơ đồ lai

Làm giúp mik bài 12 toán 7 tập 1 tr 112 với mn ơi

x/4=y/-7 và x - y = 33 quên cách làm nên lên đây hỏi- khổ:)

Giải thích và chọn đáp án giúp mình vs cần gấp

Such typing mistakes would have been avoided if you________ more careful. * A. had been B. are C. hadn't been D. would be George said to Mary that he ______that film three times. * A. has seen B. had seen C. would have seen D. was going to see English_______all over the world * A. was spoken B. were spoken C. is spoken D. are spoken Martha asked Peter when_______ * A. was he born B. did he born C. he born D. he was born If I______in London now, I could visit British Museum. * A. were B. was C. had been D. am

Vẽ đậu mầm buồn Mong các thành quay về nhóm nhé hôm nay mất điện k quản nhóm trừ mất 15 điểm

III. Write the correct form or tense of the verbs in brackets. 1. At present, the social networks ______________ (become) more popular among young generation. 2. I ______________ (not listen) to their new CD yet. Is it any good? 3. When I was a student, I ______________ (not like) doing homework. 4. Facebook ______________ (found) in 2004 by Mark Zuckerberg and Eduardo Saverin. 5. The American ______________ (spend) 34 hours a week watching television. 6. ______________ (you/ ever/ make) origami cranes? 7. I________________ a new CD of folk songs..(just buy) 8. Do you adore ______________ (lie) in a hot bath? 9. Yesterday, when he(come), I ( eat ) lunch. 10. Many teenagers prefer ______________ (watch) TV to ______________ (read) books. IV Supply the correct form of the words in brackets. 1. The Internet is very ______________, it takes up a lot of our time. (addict) 2. I enjoy ______________ with friends and going out at the weekend. (social) 3. Sitting in front of the computer too long can cause ______________. (obese) 4. Are you ______________ about the new Gears Of War games? (excite) 5. She listens to classical music for ______________. (relax) 6. She was ______________ with her job and decided to look for a new one. (satisfy) 7. Face to face ______________ is better than Skype video calls. (communicate)

Vẽ anime có line, màu,ko app, ko kẻ ngang, ko ô li, ko vi phạm luật, ko chụp = mt P/S: Chôm nick thg em cầm đi chơi :) Ai để đôi vs em hông?

The book_______many years ago. * A. wrote B. is written C. was written D. D. was being written If he_______the truth, the police wouldn'tarrest him. * A. tells B. told C. is going to tell D. had told She asked us what we _______ the following summer. * A. were going to do B. will do C. would be done D. would have done I wish you_______earlier yesterday. * A. leave B. left C. had left D. would leave They drove to Rome September 15th. * A. on B. in C. at D. within If I______him yesterday, I would have to come back tomorrow. * A. didn't meet B. met C. hadn't met D. would met Look! A deer_______by a tiger. * A. catches B. is catching C. is caught D. is being caught I arrived_______the bus stop at 4 o'clock. * A. at B. on C. in D. inside The boy wishes that he________the competition the next day. * A. wins B. will win C. had won D. would win He_______her where she was going. * A. told B. said C. reminded D. asked

một ca nô xuôi dòng sông Lam từ bến đò Chùa Bà Bụt hết 10 phút đến bến đò Đền Quả Sơn và quay lại bến đò Chùa Bà Bụt hết 15 phút. giả sử vận tốc nước là 4km/h. tính chiều dài khúc sông từ bến đò Chùa Bà Bụt đến bến đò Đền Quả Sơn