负干扰 negative interference

互联网2013-11-14

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如果同源的相同染色体在一处发生了交叉，而其近旁则可发生频率较预期更高的交叉，这种现象称为负干扰。是交换干扰的反义词。指交叉并发指数大于1的情况。对曲霉属真菌和大肠杆菌噬菌体等的负干扰现象已进行了充分的研究，已知在非常邻近的部位间，交叉并发指数值可高达数十倍，称为高频负干扰。

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