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M[FONT=Times New Roman,Times New Roman][FONT=Times New Roman,Times New Roman]ộ[/FONT][/FONT]t phân t[FONT=Times New Roman,Times New Roman][FONT=Times New Roman,Times New Roman]ử [/FONT][/FONT]mARN dài 2040Å [FONT=Times New Roman,Times New Roman][FONT=Times New Roman,Times New Roman]đượ[/FONT][/FONT]c tách ra t[FONT=Times New Roman,Times New Roman][FONT=Times New Roman,Times New Roman]ừ [/FONT][/FONT]vi khu[FONT=Times New Roman,Times New Roman][FONT=Times New Roman,Times New Roman]ẩ[/FONT][/FONT]n [FONT=Times New Roman,Times New Roman][FONT=Times New Roman,Times New Roman]E. coli [/FONT][/FONT]có t[FONT=Times New Roman,Times New Roman][FONT=Times New Roman,Times New Roman]ỉ [/FONT][/FONT]l[FONT=Times New Roman,Times New Roman][FONT=Times New Roman,Times New Roman]ệ [/FONT][/FONT]các lo[FONT=Times New Roman,Times New Roman][FONT=Times New Roman,Times New Roman]ạ[/FONT][/FONT]i nuclêôtit A, G, U và X l[FONT=Times New Roman,Times New Roman][FONT=Times New Roman,Times New Roman]ầ[/FONT][/FONT]n l[FONT=Times New Roman,Times New Roman][FONT=Times New Roman,Times New Roman]ượ[/FONT][/FONT]t là 20%, 15%, 40% và 25%. Ng[FONT=Times New Roman,Times New Roman][FONT=Times New Roman,Times New Roman]ườ[/FONT][/FONT]i ta s[FONT=Times New Roman,Times New Roman][FONT=Times New Roman,Times New Roman]ử [/FONT][/FONT]d[FONT=Times New Roman,Times New Roman][FONT=Times New Roman,Times New Roman]ụ[/FONT][/FONT]ng phân t[FONT=Times New Roman,Times New Roman][FONT=Times New Roman,Times New Roman]ử [/FONT][/FONT]mARN này làm khuôn [FONT=Times New Roman,Times New Roman][FONT=Times New Roman,Times New Roman]để [/FONT][/FONT]t[FONT=Times New Roman,Times New Roman][FONT=Times New Roman,Times New Roman]ổ[/FONT][/FONT]ng h[FONT=Times New Roman,Times New Roman][FONT=Times New Roman,Times New Roman]ợ[/FONT][/FONT]p nhân t[FONT=Times New Roman,Times New Roman][FONT=Times New Roman,Times New Roman]ạ[/FONT][/FONT]o m[FONT=Times New Roman,Times New Roman][FONT=Times New Roman,Times New Roman]ộ[/FONT][/FONT]t [FONT=Times New Roman,Times New Roman][FONT=Times New Roman,Times New Roman]đ[/FONT][/FONT]o[FONT=Times New Roman,Times New Roman][FONT=Times New Roman,Times New Roman]ạ[/FONT][/FONT]n ADN có chi[FONT=Times New Roman,Times New Roman][FONT=Times New Roman,Times New Roman]ề[/FONT][/FONT]u dài b[FONT=Times New Roman,Times New Roman][FONT=Times New Roman,Times New Roman]ằ[/FONT][/FONT]ng chi[FONT=Times New Roman,Times New Roman][FONT=Times New Roman,Times New Roman]ề[/FONT][/FONT]u dài phân t[FONT=Times New Roman,Times New Roman][FONT=Times New Roman,Times New Roman]ử [/FONT][/FONT]mARN. Tính theo lí thuy[FONT=Times New Roman,Times New Roman][FONT=Times New Roman,Times New Roman]ế[/FONT][/FONT]t, s[FONT=Times New Roman,Times New Roman][FONT=Times New Roman,Times New Roman]ố [/FONT][/FONT]l[FONT=Times New Roman,Times New Roman][FONT=Times New Roman,Times New Roman]ượ[/FONT][/FONT]ng nuclêôtit m[FONT=Times New Roman,Times New Roman][FONT=Times New Roman,Times New Roman]ỗ[/FONT][/FONT]i lo[FONT=Times New Roman,Times New Roman][FONT=Times New Roman,Times New Roman]ạ[/FONT][/FONT]i c[FONT=Times New Roman,Times New Roman][FONT=Times New Roman,Times New Roman]ầ[/FONT][/FONT]n ph[FONT=Times New Roman,Times New Roman][FONT=Times New Roman,Times New Roman]ả[/FONT][/FONT]i cung c[FONT=Times New Roman,Times New Roman][FONT=Times New Roman,Times New Roman]ấ[/FONT][/FONT]p cho quá trình t[FONT=Times New Roman,Times New Roman][FONT=Times New Roman,Times New Roman]ổ[/FONT][/FONT]ng h[FONT=Times New Roman,Times New Roman][FONT=Times New Roman,Times New Roman]ợ[/FONT][/FONT]p m[FONT=Times New Roman,Times New Roman][FONT=Times New Roman,Times New Roman]ộ[/FONT][/FONT]t [FONT=Times New Roman,Times New Roman][FONT=Times New Roman,Times New Roman]đ[/FONT][/FONT]o[FONT=Times New Roman,Times New Roman][FONT=Times New Roman,Times New Roman]ạ[/FONT][/FONT]n ADN trên là:
A.
A.
G = X = 280, A = T = 320. B. G = X = 360, A = T = 240.
C. G = X = 320, A = T = 280. D. G = X = 240, A = T = 360.
C. G = X = 320, A = T = 280. D. G = X = 240, A = T = 360.