Cho biết trong quá trình GP của cơ thể đực có 16% số tế bào có cặp NST mang cặp gen Aa không phân li trong GP I, GP II diễn ra bình thường, các tế bào khác diễn ra bình thường, cơ thể cái giảm phân bình thường. Hãy cho biết đời con của phép lai AaBb(đực) × AaBB(cái) : a. Có tối đa bao nhiêu kiểu gen đột biến b. Hợp tử đột biến chiếm tỉ lệ bao nhiêu c. Hợp tử đột biến dạng thể 3 chiếm tỉ lệ bao nhiêu d. Kiểu gen aaBB chiếm tỉ lệ bao nhiêu ^ ^

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Read these passages and match the each passage to its title. There is ONE title you needn’t use. A. How I began D. My most frightening experience B. The worst aspect of my hobby E. Why I like my hobby C. My hopes for the future F. When and where I do it 1. ___________ For me, every weekday begins the same: I get up at 7.00. I have breakfast, I take the bus to school, I go to lessons ... I don’t hate this daily routine, but it isn’t very thrilling. In the evenings, however, I drive Formula 1 cars, build enormous cities and defend my planet against aliens. In short, I play computer games. It’s like entering a different world. That’s why I love playing them so much. 2. ___________ My interest in computer games has taught me a lot about computer graphics. I want to study computing at college, and learn how to design and program games. Eventually, I’d like to start my own software company, creating and testing new games. That way, I could spend all day doing what I love most. 3. ___________ Computer games are interesting because they often contain stories and characters. The games are getting better all the time, but they are also getting more expensive. The only thing I don’t like about my hobby is the cost! New games are often about $50. 4. ___________ Some of my friends from school are interested in computer games too. We normally meet at my house in the evenings and play for a few hours. We sometimes play at weekends, but if the weather’s good I prefer to go cycling or play basketball instead. 5. ___________ I first became interested in computer games about four years ago. I was staying with my cousin for the weekend. He had some games and he taught me how to play them. I became hooked immediately! When I got home, I decided to save all my money for buying games. Now I’ve got about twenty different games.

Read the following passage and choose the item (A, B, C, or D) that best answers each of the questions about it. Hue is the ancient imperial capital of Viet Nam during the time of the Nguyen Dynasty (1802 - 1945). It is comfortably reached by plane or train from Hanoi. But it takes up to 14 hours to get to Hue from Hanoi if you travel by bus. On the South bank of the famous Huong River, opposite the Ancient Citadel and around the Le Loi and Hung Vuong Streets is where the majority of Hue’s hotels, restaurants and tourist services are located and this makes it easy for you to find everything you will need to maximize the enjoyment of your stay in the Imperial City. Many people hire motorcycles or bicycles to visit the historical sights and monuments there but it is possible to walk, or to take a taxi or cyclo, too. 1. What does the word ‘ancient’ in line 1 mean? A. of the present time B. very old C. liked by a lot of people D. not special or unusual 2. Hue can be reached by______ . A. plane B. train C. bus D. all are correct 3. Where is the Ancient Citadel? A. On the South bank of the Huong river. B. On the North bank of the Huong river. C. On Hung Vuong Street. D. No information 4. We can visit the historical sights and monuments there _____ . A. by motorcycle or bicycle B. by taxi or cyclo C. on foot D. all are correct 5. Which of the following is NOT true? A. Hue used to be the imperial capital of Vietnam. B. We can travel to Hue by train or by plane. C. It’s comfortable to travel to Hue by bus. D. Most of Hue’s hotels and restaurants are on the South bank of the Huong river.