性染色体自由交配怎么算比如说,雌雄红眼果蝇交配后得到的后代中有白眼的,那么第一代杂交,杂交的后代第二代自由交配,则第二代中红眼与白眼的比例,答案是13比3,怎么算 ,我想应
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![性染色体自由交配怎么算比如说,雌雄红眼果蝇交配后得到的后代中有白眼的,那么第一代杂交,杂交的后代第二代自由交配,则第二代中红眼与白眼的比例,答案是13比3,怎么算 ,我想应](/uploads/image/z/8644218-42-8.jpg?t=%E6%80%A7%E6%9F%93%E8%89%B2%E4%BD%93%E8%87%AA%E7%94%B1%E4%BA%A4%E9%85%8D%E6%80%8E%E4%B9%88%E7%AE%97%E6%AF%94%E5%A6%82%E8%AF%B4%EF%BC%8C%E9%9B%8C%E9%9B%84%E7%BA%A2%E7%9C%BC%E6%9E%9C%E8%9D%87%E4%BA%A4%E9%85%8D%E5%90%8E%E5%BE%97%E5%88%B0%E7%9A%84%E5%90%8E%E4%BB%A3%E4%B8%AD%E6%9C%89%E7%99%BD%E7%9C%BC%E7%9A%84%EF%BC%8C%E9%82%A3%E4%B9%88%E7%AC%AC%E4%B8%80%E4%BB%A3%E6%9D%82%E4%BA%A4%EF%BC%8C%E6%9D%82%E4%BA%A4%E7%9A%84%E5%90%8E%E4%BB%A3%E7%AC%AC%E4%BA%8C%E4%BB%A3%E8%87%AA%E7%94%B1%E4%BA%A4%E9%85%8D%EF%BC%8C%E5%88%99%E7%AC%AC%E4%BA%8C%E4%BB%A3%E4%B8%AD%E7%BA%A2%E7%9C%BC%E4%B8%8E%E7%99%BD%E7%9C%BC%E7%9A%84%E6%AF%94%E4%BE%8B%EF%BC%8C%E7%AD%94%E6%A1%88%E6%98%AF13%E6%AF%943%EF%BC%8C%E6%80%8E%E4%B9%88%E7%AE%97+%2C%E6%88%91%E6%83%B3%E5%BA%94)
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