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khoa45444
2 năm trước
Câu 1 Cặp NST giới tính có chức năng gì A Quy định giới tính B Quy định tính trạng giới tính C Quy định giới tính và tính trạng liên quan đến giới tính D Quy định đực cái Câu 2 Ở các loài sinh sản hữu tính ,bộ NST đặc trưng của loài được ổn định qua các thế hệ cơ thể nhờ A quá trình nguyên phân B nguyên phân kết hợp với giảm phân D nguyên phân ,giảm phân kết hợp với thụ tinh Câu 3 sự tự nhân đôi của NST diễn ra chu kì nào của tế bào A Kì đầu B Kì giữa C Kì trung gian D Kì sau Câu 4 Chức năng của mARN là gì A vận chuyển axit amin tương ứng tới nơi tổng hợp Protein B truyền đạt thông tin qui định cấu trúc Protein C mang thông tin qui định cấu trúc Protein D Là thành phần tạo Riboxom
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