收入来源: |
脜漏脨脨 |
收入成员: |
sdasd |
收入日期: |
10121985 |
收入账户: |
现金 |
状态: |
公开,不允许评论 |
叨叨叨叨: |
We'll need to take up references <a href=" http://cascadeicewater.com/blog/research-writing/ ">write check for students</a> The Y chromosome is passed down identically from father to son, so mutations, or point changes, in the male sex chromosome can trace the male line back to the father of all humans. By contrast, DNA from the mitochondria, the energy powerhouse of the cell, is carried inside the egg, so only women pass it on to their children. The DNA hidden inside mitochondria, therefore, can reveal the maternal lineage to an ancient Eve.
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暂时还没有人来看过哦