Biology
Biology, 03.08.2021 21:30, vickye146

ở ruồi giấm gen a quy định cánh dài trội hoàn toàn so với gen a quy định cánh ngắn cho ruồi giấm cánh dài và cánh ngắn giao phối với nhau f1 tỉ lệ 50% ruồi cánh dài 50% ruồi cánh ngắn tiếp tục cho f1 giao phối với nhau thì f2 thống kê ở cả quần thể có tỉ lệ 9 cánh dài 7 cánh ngắn

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ở ruồi giấm gen a quy định cánh dài trội hoàn toàn so với gen a quy định cánh ngắn cho ruồi giấm cán...

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