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Dothutrang2k
2 năm trước
Ở cà chua, tính trạng màu quả do 1 cặp gen quy định, tiến hành lai 2 thứ cà chua thuần chủng quả đỏ và quả vàng được F1 toàn quả đỏ, sau đó cho F1 lai với nhau thu được F2. Khi cho lai giữa các cây quả vàng ở F2 với nhau sẽ thu được kết quả là A. 1 quả đỏ: 1 quả vàng B. 100% quả vàng C. 3 quả đỏ: 1 quả vàng D. 100% quả đỏ
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