According to new research, a firm grip is an indicator of genetic fitness.

根据一项新的研究，强健的握力是遗传健康的一项指标。

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This is all on behalf of a cause other than one's own genetic fitness, of course.

这是一种“消耗自己，造福他者”的行为，对于自身的基因是没有半点好处的。

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Just as symmetry and scent are important yet subtle indicators of genetic fitness, a person's voice can also give clues to his reproductive ability.

正如长相的对称性和散发出来的气味是基因好坏的比较隐秘的表现一样，一个人的声音也给出了这人繁殖能力方面的暗示。

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The mere fact of wandering and surviving might therefore be a good indication of genetic fitness.

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Subconsciously they may be perceiving beauty in accordance with evolutionary forces, since dominance can indicate genetic fitness.

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The pedigrees the USDA used for a century can predict the genetic fitness of a cow with only 30% accuracy at birth.

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