Species, once separate, do not exchange genetic information because they do not interbreed.

物种一旦分离便不能再进行遗传信息的交流，因为它们无法交配。

The behaviour may also deter competing males and stops different species interbreeding.

这种行为也可能阻止互相竞争的雄性，并阻止不同物种的杂交。

There appeared to be little gene flow between the two groups, suggesting that they rarely interbred.

这两个群体之间的基因流通似乎很少，表明它们很少进行杂交。

Having a tight aggregation, hunting and interbreeding with related crocodile species all pose threats.

由于聚群密集，和近亲鳄鱼共同捕猎并种间繁殖，这都对它们造成了威胁。

Where their ecological ranges overlap, ecotypes rarely interact and do not appear to interbreed.

在生态幅度重叠的地方，生态型很少相互作用，似乎也不会杂交。

Because we don't know the exact source of that interbreeding, we can't link it with the fossils directly.

因为我们不知道这种融合混血的确切来源，我们不能直接把它和化石联系起来。

Fifty thousand years ago is the approximate time humans and Neandertals interbred.

五万年前是人类和尼安德特人杂交的大概时间。

And wherever the cats followed humans, they also interbred with the native wildcats already there.

在猫跟随人类的任何地方， 它们也会与当地的野猫杂交。

That's because about 40,000 years ago,certain human populations interbred with Neanderthals,meaning some people alive today have Neanderthal ancestors.

那是因为大约 40,000 年前，某些人类与尼安德特人杂交，这意味着今天还活着的一些人有尼安德特人的祖先。

It was not clear from the Oase man's genome whether interbreeding was common in Europe.

从绿洲人的基因组来看， 混血在欧洲是否很普遍尚不清楚。

That means interbreeding between the two reduces the quality of wild varieties.

这意味着两者之间的杂交会降低野生品种的质量。

The recent topics were on how to interbreed different plants and how to observe the interaction among the atoms.

他们近来的话题是如何杂交植物和如何观察原子间的交互作用。

Orcas are unusual in that different pods tend to feed on different prey and rarely interbreed.

逆戟鲸的不同寻常之处在于，不同的群体往往以不同的猎物为食，而且很少杂交。

The biological species concept makes sure that cryptic species, those that look similar but do not interbreed, are separated.

生物物种概念确保将那些看起来相似但不杂交的隐匿物种分开。

The biological species concept defines a species as the group of organisms which can interbreed.

生物物种概念将物种定义为可以杂交的生物群。

Of course, in their native habitat, wild Takhi had regularly interbred with domesticated horses for millennia, producing a population with much more diverse appearances.

当然，在它们的原生栖息地，野生蒙古马与家养马匹有规律地杂交了数千年，产生了一个外观更加多样化的种群。

Both groups are believed to have interacted a lot with Homo sapiens, or modern man, and are believed to have interbred with modern humans.

据说，这两个群体都与智人或现代人有过很多互动，并与现代人杂交过。

Which suggests that both of these traits are used to distinguish one another in territorial interactions and avoid interbreeding.

这表明这两种特征都被用来在地域互动中相互区分并避免杂交。

Significantly, this herd will be entirely free of cattle genes-unlike most existing buffalo herds in America, which have interbred with domestic cattle.

更为重要的是，这个群体将完全是纯种野生基因，而非像美国现存的许多野牛群，是与驯养的家牛杂交的后代。

However, we know that for animals to interbreed, they need to be in the same place at the same time.

然而，我们知道，要使动物杂交，它们需要同时出现在同一个地方。