Hàm lượng ADN trong nhân tế bào 2n của người là 6,6.10-12 pg. Hai nhóm tế bào 2n của người phân chia theo hai cách khác nhau đều tạo ra những tế bào con có 6,6.10-12 pg ADN. a, Gọi tên kiểu phân chia tế bào của mỗi nhóm tế bào? b, Hoạt động của nhiễm sắc thể (xét ở kì giữa và kì sau) ở hai nhóm tế bào khác nhau như thế nào? c, Cho biết bộ NST trong các tế bào con ở hai nhóm.

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Mark letter A, B, C or D on your answer sheet to indicate the sentence that is closest in meaning to the original sentence in each of the following questions. 33. Water these plants or they will die. A. If you did not water these plants, they will die. B. If you water these plants, they will die. C. If you don’t water these plants, they will die. D. If you are watering these plants, they will die. 34. Mary said to them, “Can I borrow you some money? I want to buy this shirt.” A. Mary asked me if she could borrow me some money because she wanted to buy that shirt. B. Mary asked me if she could borrow me some money although she wanted to buy that shirt. C. Mary asked me if she can borrow me some money because she wantes to buy that shirt. D. Mary asked me if she could borrow me some money although she wantes to buy that shirt. 35. The old man is working in this factory. I borrowed his bicycle yesterday. A. The old man is working in this factory which I borrowed his bicycle yesterday. B. The old man whom is working in this factory I borrowed his bicycle yesterday. C. The old man whom I borrowed his bicycle yesterday is working in this factory. D. The old man whose bicycle I borrowed yesterday is working in this factory. 36. In Vietnam, football is more popular than basketball. A. In Vietnam, basketball is not as popular as football. B. In Vietnam, basketball is more popular than football. C. In Vietnam, football is not as popular as basketball. D. In Vietnam, football is as popular as basketball. 37. No one has sent me that letter. A. I haven’t been sent that letter. B. I wasn’t sent that letter. C. That letter hasn’t been sent me. D. That letter has sent to me by no one. 38. He survived the operation thanks to the skillful surgeon. A. He survived because he was a skillful surgeon. B. He wouldn’t have survived the operation without the skillful surgeon. C. There was no skillful surgeon, so he died. D. Though the surgeon was skillful, he couldn’t survive the operation. 39. Lee gave up her job.She planned to continue her education. A. Lee’s education was interrupted because she wanted to find a job. B. Lee gave up her job to continue her education. C. Lee gave up her job in case she continued her education. D. Lee gave up her job and continuing her education. 40. This is the first time I have gone out for a picnic. A. I have ever gone out for a picnic. B. I have never gone out for a picnic before. C. I had never gone out for a picnic before. D. I never go out for a picnic.