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phamquynhanh2009lx
2 năm trước
Ở chuột, gen đồng màu (không đốm) W là trội so với gen đốm w; gen long ngắn S trội hơn gen long dài s. lai chuột cái dị hợp tử ề cả hai gen trên với con đực đồng hợp tử lặn, thu được: 75 lông đốm, dài 66 đồng màu, ngắn 10 đồng màu, dài 7 lông đốm, ngắn a. Hai gen trên có liên kết với nhau không? b. Xác định trật tự sắp xếp các gen trên nhiễm sắc thể ở chuột cái. c. Nếu các gen liên kết, xác định khoảng cách giữa các gen
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