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Hybridization does occur naturally in the wild .

在自然环境中确有杂交现象发生。

In the arctic , the north pacific right whale and polar bears are probably threatened the most by hybridization .

在北极，北太平洋露脊鲸和北极熊可能是最受杂交威胁的两种物种。

For this reason , they have done only some steps of the process , such as the hybridization reaction described above .

基于这个原因，他们只是做了一些处理步骤，如上述的杂交反应。

The first comparisons of small sections of neanderthal dna did not indicate any hybridization , and the lack of interbreeding became a widely accepted conclusion .

与少量尼安德特人dna的第一次比对并没有发现任何杂交的迹象，人类和他们不存在异种繁殖也成为了一种被广泛接受的结论。

The sunflower and lonicera fly examples raise the question of whether hybridization between species has been more frequent than biologists once assumed .

向日葵和忍冬蝇的例子提出了这样一个问题：物种之间的杂交频度是不是要比生物学家们先前预测的要更为频繁？