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求教这题要怎麼回答

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1.In the egg-chicken question,how do you use the relation of environmental factor affecting the DNA structureto resolve this question? Explain in the steps of DNA molecular aspects.
求教= =b 过几天要交


1楼2014-11-13 02:06回复
    想不到先有鸡与先有蛋,和这个环境与分子相互影响有啥关系= =


    2楼2014-11-13 02:06
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      白天自顶一下


      来自iPhone客户端4楼2014-11-13 08:22
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        太专业了,射射


        来自iPhone客户端16楼2014-11-16 14:10
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