Đem giao phối ruồi giấm thân xám cánh thẳng vs 2 ruồi giấm cái -Con ruồi cái thứ nhất thân xám cánh cong. Thu đc F1 150 con thân đen cánh thẳng, 149 con thân đen cánh cong, 437 con thân xám cánh thẳng và 445 con thân đan cánh cong -Con ruồi cái thứ 2 thân xám cánh thẳng. Thu đc F1 340 con thân xám cánh thẳng, 120 con thân xám cánh cong a/ Giải thích kết quả trên và viết sơ đồ lai. Viết các cặp gen qui định cặp tính trạng tương phản trên những nhiễm sắc thể thường b/Làm thế nào để xác định kiểu gen của ruồi giấm đen cánh thẳng?

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