Wide cross was an effective method creating new species, new germplasm and transfering exogenous gene, it had important significance in theories and practices.
远缘杂交是创造新物种、新种质以及转移异源遗传物质的有效途径，在理论和实践上都具有重要意义。
As more and more genomes of some organisms have been known, cross-species comparative sequence analysis method has been more and more helpful.
随着人类对某些物种基因组的认识越来越全面，序列比较分析法变得越来越重要。
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