So how long can a gene survive in a species if it is no longer used?
那么，如果一个基因不再被使用，它能在一个物种中存活多久呢？
When a species goes extinct, it dramatically changes the landscape of biodiversity.
当一个物种灭绝时，它会极大地改变生物多样性的状况。
When humans first emerged as a species, they shared the planet with many types of ape.
当人类首次作为一个物种出现时，他们依旧跟多种类人猿共存。
If we want to survive as a species, we have to expand into the solar system and likely beyond.
如果我们希望作为一个物种生存下去，就必须扩张到太阳系之中或超越太阳系。
The human thirst for knowledge is the driving force behind our successful development as a species.
人类对知识的渴望是我们作为一个物种成功发展背后的驱动力。
As you recall, an adaptation is a physical or behavioral feature of a species that helps it survive and reproduce.
正如你记得的那样，（物种）适应是有助于一个物种生存或繁殖的生理或行为特征。
An equally important criterion is the ability of a species to survive random global ecological catastrophes due to impacts.
一个同样重要的标准是，一个物种是否有能力在全球任一生态灾难中生存下来。
Yet an equally important criterion is the ability of a species to survive random global ecological catastrophes due to impacts.
然而一个同样重要的标准是，物种在随机性全球生态灾难中幸存的能力。
These episodes of rapid evolution are separated by relatively long static spans during which a species may hardly change at all.
这些快速进化的阶段被相对较长的静态跨度分隔开来，在此期间，一个物种几乎不会发生任何变化。
The most important factor for the survival of a species is its ability to compete and adapt to gradual changes in its environment.
一个物种最重要的生存因素是它的竞争能力和适应环境逐渐变化的能力。
The ability of a species to compete and adapt to a gradually changing environment is not the only ability that is essential for survival.
一个物种竞争和适应逐渐变化的环境的能力并不是生存所必需的唯一能力。
The effect on the well-being and existence of a species is just the result of the effects of selection on all the individuals of the species.
对一个物种的福祉和生存的影响，只是对该物种所有个体的选择所造成影响的结果。
The standard criterion for the survival of a species is its success in competing with other species and adapting to slowly changing environments.
一个物种生存下来的标准是它能否成功地与其他物种竞争并适应缓慢变化的环境。
Assisted migration means picking up members of a species, or members of a group of interdependent species and physically moving or translocating them.
辅助迁移指的是挑选一个物种的成员，或一组相互依赖的物种的成员，并在物理上移动或迁移它们。
The value fit matters, says Cialdini, because innovation is, in part, a process of change, and under that pressure we, as a species, behave differently.
恰尔迪尼说，价值观的契合很重要，因为创新在某种程度上是一个改变的过程，在这种压力下，我们作为一个物种，会有不同的行为表现。
Barcoding is a technique in which one or more short gene sequences, taken from a well-characterized portion of the genome, are used to identify a species through DNA analysis.
测序是一种技术，它是从具有明确特征的基因组提取的一个或多个短基因序列，并通过DNA 分析来识别一个物种。
Nor does it explain why, in a species where one parent determines handedness, a brood is not exclusively right-or left-handed when the offspring would have the same genetic predisposition.
这也不能解释为什么在一个由父母一方决定用利手的物种中，当后代具有相同的遗传倾向时，他们并非完全是右撇子或左撇子。
Nor does it explain why, in a species where one parent determines handedness, a brood is not exclusively right or left-handed when the offspring would have the same genetic predisposition.
这也不能解释为什么在一个由父母一方决定利手的物种中，当后代具有相同的遗传倾向时，他们并非完全是右撇子或左撇子。
Nor does it explain why, in a species where one parent determines handedness, a brood is not exclusively right- or left-handed when the offspring would have the same genetic predisposition.
这也不能解释为什么在一个由父母一方决定用手习惯的物种中，当后代具有相同的遗传倾向时，他们并非完全是右撇子或左撇子。
It's a species of a very rare tree that grows in Australia, Eidothea hardeniana, but it's better known as the Nightcap Oak.
这是一种生长在澳大利亚的非常稀有的树——冬花，但它更广为人知的名字是夜冠橡树。
For instance, there is a species of squirrel, in the Western part of the United States that can get really hot when they are out foraging for food.
比如，美国西部有一种松鼠，它们外出觅食的时候会变得很热。
Princessfish are a species of coral-reef fish that are captured alive by divers who first stun the individual fish by squirting a certain poison at them.
公主鱼是一种珊瑚礁鱼，潜水员会先将某种毒药喷到鱼身上，使其昏迷，然后将其活捉。
Furthermore, most species do not depend entirely on a single resource, if the major resource for a species becomes scarce, the species can usually shift to alternative resources.
此外，大多数物种并不完全依赖单一的资源，如果一个物种的主要资源变得稀缺，该物种通常可以转向替代资源。
It can loosely be described as travel that takes place at regular intervals—often in an annual cycle—that may involve many members of a species, and is rewarded only after a long journey.
它可以比较粗略地描述成是发生在固定周期（这个周期通常是一年一次）的包含某一个物种很多成员的集体旅行，并且只有在长途旅行后才有回报。
Rugosa rose is a species of rose native to eastern Asia.
蔷薇属玫瑰是原产于东亚的玫瑰品种。
A species of alumroot (Heuchera sanguinea) was native to the southwest United States and Mexico.
一种矾根属植物（珊瑚钟矾根属）原产于美国西南部及墨西哥。
And you shouldn't judge a species by its place of origin.
同样的道理，你也不应该从物种起源的地方来判断物种。
Brown study: Pollen of chaenomeles, a species of quince.
沉思：木瓜花粉，一种榅桲。
His experiment involved a species of toad called the Midwife toad.
他的实验由一种被称为产婆蟾的蟾蜍完成。
For many scientists, a species' success is measured by sheer Numbers.
对很多科学家来说，一个物种的成功完全取决于数量。
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