这本书说到，在研究中，妇女一直表现出对拥有匀称的身材，遗传适合度及地位微妙标志的男性的偏好。
In studies, women have consistently shown preferences for men with symmetrical bodies, a subtle mark of genetic fitness and status, the book said.
如果适合度的差别含有遗传的成分，则后代的遗传组成会有改变。
If fitness differences have a genetic component, then the genetic make-up of the subsequent generations will be altered.
如果适合度的差别含有遗传的成分，则后代的遗传组成会有改变。
If fitness differences have a genetic component, then the genetic make-up of the subsequent generations will be altered.
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