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yenphi1401
2 năm trước
Bài 9. Ở cà chua, gen A qui định quả đỏ trội hoàn toàn so với gen a qui định quả vàng. Cây 4n quả đỏ AAAA giao phấn với cây 4n quả vàng aaaa thu được F1. Cho F1 giao phấn với nhau được F2 có tỉ lệ kiểu hình như thế nào? Bài 10. Dùng cônsixin để xử lí các hợp tử lưỡng bội có kiểu gen Aa thu được các thể tứ bội. Cho các thể tứ bội trên giao phấn với nhau, trong trường hợp các cây bố mẹ giảm phân bình thường, theo lí thuyết thì tỉ lệ phân li kiểu gen ở đời con như thế nào?
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