From the point of view of domestic animal breeding, the paper introduces the major achievements obtained in cytogenetics.

本文从家畜育种角度概括介绍了细胞遗传学的重要研究成果。

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Increased demand for animal products has also led to the breeding of more genetically uniform domestic animal populations that are more vulnerable to pathogens, he says.

他说，动物产品需求的增长还导致家畜基因越来越单一，使家畜更容易感染病菌。

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Also, most remarkably, we have seen no new animal species emerge in domestic breeding.

而且，最值得注意的是，人类在对动物的驯养过程中，也未见有任何新的物种出现。

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