在19个公认的北极熊亚种群中，3个在下降，6个较稳定，1个在增加，9个缺乏足够的数据。
Of the nineteen recognized polar bear subpopulations, three are declining, six are stable, one is increasing, and nine lack enough data.
这时，亚种群已经进化成不同的物种。
At this point the subpopulations have evolved into distinct species.
一般来说，大多数物种的亚种群之间都有一定的距离。
In general, the subpopulations of most species are separated from each other by some measurable distance.
最终，这些亚种群在基因上变得如此不同，以至于即使消除了它们之间的物理障碍，它们也无法杂交。
Eventually the subpopulations become so genetically distinct that they cannot interbreed even if the physical barriers between them were removed.
据英国《每日电讯报》报道，科学家发现近年在地中海出现的大白鲨竟属于澳大利亚种群。
Great white sharks found in the Mediterranean were originally from Australia, researchers have discovered, the Daily Telegraph of London reported.
而且，从长期看来，就算物种的一两个亚种群消失了也无关紧要，因为那些来自食物充沛之“斑块”[1]的“新移民”最终将重建物种原有的生境。
And, in the long term, it matters little if one or two groups do disappear, because immigrants from better-faring patches will eventually re-establish the species' old haunts.
属于同一亚种不同地理种群的黄河鲤和黑龙江野鲤具有较高的遗传相似性（0.89）。
Again, there is a higher genetic similarity between Cyprinusy carpio var. and Cyprinus carpio haematopterus(0.89), demonstrating that they belong to the same sub-species.
结果：库蚊属中尖音库蚊复合组4个亚种的实验室种群和伊蚊属中的白纹伊蚊的4个地理株种群均有感染；
Results:The characteristic 600bp products were observed after amplification of extracts from 4 subspecies of Culex pipiens complex and 4 geographical strains of Aedes albopictus.
其研究的内容涉及目间、科间等高级阶元的系统发生关系，以及属间、种间以及亚种或种群间的系统发生关系。
Phylogenetic relationships among higher categories (orders and families) and among genera, species, and subspecies or populations were involved in these studies.
其研究的内容涉及目间、科间等高级阶元的系统发生关系，以及属间、种间以及亚种或种群间的系统发生关系。
Phylogenetic relationships among higher categories (orders and families) and among genera, species, and subspecies or populations were involved in these studies.
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