Writing in the journal Science, the researchers say they've developed the birds with an artificialgene.
研究小组在《科学》杂志上发表文章说，他们已经研究出一种人造基因的鸟类。
2
The artificialgene units are created by joining fragments of DNA from viruses, bacteria, plants and animals.
这些人造的基因单位通过连接病毒、细菌、植物与动物的基因片段创造。
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Artificial insemination of silkworm have been succeed in research, and the cryopreservation of its germ cell have important significance in long-term conservation of the given gene.