兰毕表示，植株的点状分布状态阻止了植株间的基因混合，在与气候变化相关的疾病、虫害及掠食者来临时，它们会无力抵御。
Such spotty distribution prevents the plants from mixing genes, making them more vulnerable to the arrival of diseases, parasites, and predators associated with climate change, Lambe noted.
他和同事测定了8000多条鳕鱼的基因型，研究两个鱼群中不同版本的基因，或者说等位基因的频率在1994年至2003年间是如何变化的。
He and his colleagues genotyped more than 8000 fish to find out how the frequency of different versions of the gene, or alleles, changed in the two populations between 1994 and 2003.
通常样本间的变化比一个随机阈值小的基因被删除。
Often genes whose variation across samples is less than an arbitrary threshold value are deleted.
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