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雄性，并阻止不物种杂交。

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，和近亲鳄鱼猎并种间繁殖，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.

因为我们不知道这种融合混血确切来源，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.

五万前是类和尼安德特杂交大概时间。

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

那是因为大约 40,000 前，某些类与尼安德特杂交，这意味着今天还活着一些有尼安德特先。

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

在猫跟随类任何地方， 它们也会与当地野猫杂交。

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

从绿洲基因组来看， 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.

物种一旦分离便不能再进行遗传信息交流，因为它们无法交配。

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

他们近来话题是如何杂交植物和如何观察原子间交互作用。

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隐匿物种分开。

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

逆戟鲸不寻常之处在于，不群体往往以不猎物为食，而且很少杂交。

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种群。

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.

更为重要是，这个群体将完全是纯种野生基因，而非像美国现存许多野牛群，是与驯养家牛杂交后代。

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，它们需要时出现在一个地方。

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

丹尼索瓦与尼安德特关系比与智关系更密切，随后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.

鲜为知是，在我们基因组中还有其他古时融合混血，显现出有尼安德特和其他群体基因。

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

逃逸也是一个问题，因为杂交威胁到野生鲑鱼种群，而养殖鲑鱼可以将寄生虫传染给野生鱼类。