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anmaxcoi123
2 năm trước
Ở đậu Hà lan A ( thân cao ) trội hoàn toàn so với a (thân thấp). ♂ thân cao thuần chủng x ♀ thân thấp được F1. F1 giao phấn được F2. Cho F2 tự thụ phấn thu được F3. a. Xét bản chất di truyền thì phép lai giữa các cây F1 có thể coi là phép lai tự thụ phấn được không ? Tại sao ? b. Xác định tỉ lệ phân li KH (theo lí thuyết) ở thế hệ F3. (Biết gen quy định tính trạng nằm trên NST thường) cần gấp ạ
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