他们商定，孩子们与父方母方分别各住两个星期。
They had an arrangement that the children would spend two weeks with each parent.
更高级的认知功能似乎由母方基因控制，而吃与求偶则受父方基因掌控。
Higher cognitive function seems to be disproportionately controlled by Mom's genes, whereas the drive to eat and mate is influenced by Dad's.
Hsueh博士说：部分原因可能是因为母方和父方基因的冲突。
Dr Hsueh suggests that part of the answer may lie in a conflict between maternal and paternal genes.
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