英语学习音频

作者:英语学习音频 来源:未知 2020-11-16   阅读:

下面是小编为大家带来的英语学习视频,希望能对大家的英语学习有所帮助!点击收听音频Topasstheirgenesalongtothenextgeneration,mostanimalsneedtopartner.Soinonesense,mat

 

  下面是小编为大家带来的英语学习视频,希望能对大家的英语学习有所帮助!

  点击收听音频

  To pass their genes along to the next generation,most animals need to partner.So in one sense,mating is cooperative, with each partner contributing half their DNA to the offspring.But mating also involves plenty of competition between the sexes.That's because both males and femals are hard wired to try to make babies that can survive and reproduce,but they do this in totally different ways ,ways that actually threaten the other sex's genetic legacy.

  为了将基因遗传给下一代,大多数动物都需要配偶。所以在某种意义上交配是种合作行为,参与的伴侣每人可以将一半的DNA遗传给下一代。但交配同时还涉及两性间激烈的竞争。因为雌性都会本能地尝试,让后代得以存活并繁衍后代,但两性实现目的的方法全然不同,事实上有些方法会对异性的遗传物质产生危害。

  For males,it's all about quantity.Sperm are easy to mass produce,and most males spend little time or energy parenting,so their best mating strategy is to bread in bulk:the more offspring they have,the better the odds that some will thrive.For most females,this strategy doesn't work,because they have a limited supply of eggs and spend lots of time and energy caring for their young.

  对雄性而言就是数量问题。精子易于批量生产,大多数雄性在育儿方面花费的时间和精力较少。因此它们的最佳交配策略就是大量繁殖:繁殖出的后代越多,部分后代繁荣的可能性就越大。对大部分雄性而言这种策略就不管用了,因为卵子的数量往往有限,而且她们需要花较多的时间和精力照顾后代。

  Instead,females want to make sure they get the best dad for every one of their offspring.Some choose onl...

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