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vinhlng2906
2 năm trước
* Bài 7: Một gen có chiều dài là 0.48 μm. Trên mạch thứ nhất của gen có A, T, G, X lần lượt theo tỉ lệ 1:2:3:4. a. Tìm số nu từng loại ở mỗi mạch của gen. b. Gen thứ 2 dài bằng gen nói trên, mạch thứ 2 của gen này có số A = 2T = 3G = 4X. Hãy tính số nu từng loại ở mỗi mạch gen. c. Cho biết gen nào có số liên kết hydro nhiều hơn và nhiều hơn bao nhiêu?
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