Nhiều bệnh ung thư xuất hiện là do gen tiền ung thư hoạt động quá mức dẫn đến tổng hợp nên quá nhiều sản phẩm và kích thích tế bào phân chia liên tục. Có bao nhiêu đột biến trong số các đột biến dưới đây có thể làm cho một gen bình thường (gen tiền ung thư) trở thành gen ung thư?

1. Đột biến lặp đoạn NST;

2. Đột biến đảo đoạn NST;

3. Đột biến chuyển đoạn NST;

4. Đột biến mất đoạn NST;

5. Đột biến gen xuất hiện giữa vùng cấu trúc của gen tiền ung thư.

6. Đột biến làm gen tiền ung thư không phiên mã được

REDUCED RELATIVE CLAUSES:

1. The next train which leaves the station is to London.

2. The road which connects Hanoi and Ho Chi Minh city is called Number 1

3. The man who sat next to me on the train looked gentle.

4.. The steam engine which was invented by James Watt opened a new period in human

development history.

5. I felt sorry for Paul, who was the only child on the block.

6. The car which is running quickly is red color

7. The boy has a ball which he kicks everyday.

REDUCED RELATIVE CLAUSES:

27. The next train which leaves the station is to London.

28. The road which connects Hanoi and Ho Chi Minh city is called Number 1

29. The man who sat next to me on the train looked gentle.

30. The steam engine which was invented by James Watt opened a new period in human

development history.

31. I felt sorry for Paul, who was the only child on the block.

32. The car which is running quickly is red color

33. The boy has a ball which he kicks everyday.

34. We leam English which we want to have better communication with other people

35.I was born in Hanoi, which is the capital of Vietnam

36. We have an apartment which overlooks the park.

37. The ideas which are presented in that book are interesting.

38. Are national parks good places that can house wild animals?

39. The next question that they will consider is how to clean up the garbage.

40. The noise which comes from the boat engine might disturb sea animals