| 谈自然选择的局限性 |
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| 引用本文： | 杨骥,高秀荣.谈自然选择的局限性[J].辽宁师专学报(自然科学版),2014(2):18-19. |
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| 作者姓名： | 杨骥 高秀荣 |
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| 作者单位： | 铁岭师专,辽宁铁岭112000 |
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| 摘 要： | 自然选择保留对生物有利的基因,淘汰有害的基因,但这种选择只对幼年个体起作用.如果这种基因表达的时间比较晚,或在个体完成繁殖任务之后才表达,即使这种基因对该种生物有害,自然选择也不能够淘汰这种有害基因.可见自然选择在淘汰有害基因和保留有利基因等方面具有局限性.
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| 关 键 词： | 自然选择 基因 保留 淘汰 局限性 |
The limitations of natural selection |
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| YANG Ji,GAO Xiu-rong.The limitations of natural selection[J].Journal of Liaoning Teachers College(Natural Science Edition),2014(2):18-19. |
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| Authors: | YANG Ji GAO Xiu-rong |
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| Institution: | (Tieling Normal College, Tieling Liaoning 112000) |
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| Abstract: | Natural selection reserves the beneficial genes that favors to organisms and eliminates the detrimental genes. But such selection only works on the larvae natural selection won＇ t eliminate the detrimental genes even though these genes have had effect on organisms if such genes express late or express＇ after reproduction. So natural selection has limitations on eliminating the detrimental genes and reserving the beneficial genes. |
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| Keywords: | natural selection genes reserve eliminate limitations |
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