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

这行能阻止互相竞争的雄性，并阻止不同的杂交。

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间繁殖，这都对它们造成了威胁。

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

因我们不知道这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.

五万前是人类和尼安德特人杂交的大概时间。

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

那是因大约 40,000 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。

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， 它们会与当地的野猫杂交。

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。

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

一旦分离便不能再进行遗传信息的交流，因它们无法交配。

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和如何观察原子间的交互作用。

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

生概念确保将那些看起来相似但不杂交的隐匿分开。

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食，而且很少杂交。

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

生概念将定义以杂交的生群。

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，产生了一个外观更加多样化的群。

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

这表明这两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.

更重要的是，这个群体将完全是纯野生基因，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，要使动杂交，它们需要同时出现在同一个地方。

Denisovans were related more closely to Neanderthals than to Homo sapiens, and subsequent analysis has shown that the two sometimes interbred.

丹尼索瓦人与尼安德特人的关系比与智人的关系更密切，随后的分析表明两者有时会杂交。

What's less well known is that there were other ancient interbreeding events in our genome showing up in Neanderthals and in other groups.

鲜人知的是，在我们的基因组中还有其他古时融合混血，显现出有尼安德特人和其他群体的基因。

Escapes are also a concern as interbreeding threatens wild salmon populations and farmed salmon can pass parasites to the wild fish.

逃逸是一个问题，因杂交威胁到野生鲑鱼群，而养殖鲑鱼以将寄生虫传染给野生鱼类。