1. Dr Manica's task was to show that these varied in the same way as human genetic data do.
   莫尼卡（Manica）博士的工作是要表明这些头骨象基因的多样性一样各自有所差异。
2. Since Dr Manica was looking for effects other than those produced by natural selection, those things had to be eliminated.
   既然莫尼卡（Manica）要研究的是除自然选择外的影响，气候因素就要排除。

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