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thhuyen1107
1 năm trước
Ruồi Giấm có 2n=8 một nhóm tế bào sinh dục sơ khai thực hiện nguyên phân 3 lần đòi hỏi môi trường cung cấp 560 NST đơn. a.) Xác định số tế bào thực hiện nguyên phân b.) Các TB con sau nguyên phân trải qua vùng chính ( giảm phân).Nếu đó là các TB sinh tinh, xác định số tinh trùng tạo ra vầ số môi trường cung cấp ( Nhờ các đồng chí giúp em ạ ! )
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