They rely on reading short snippets of DNA, and do not deal well with the long, repetitive regions that dot the genome.

它们依赖于读取DNA的短片段，而不能很好地处理基因组上长而重复的区域。

And they use it for many things: Webs Trapping prey Egg casings Transport and more Silk genes have been difficult to characterize because they code for very large proteins with highly repetitive regions.

它们将它用于很多事情：蛛网 诱捕猎物 卵壳 运输和更多 丝绸基因很难表征，因为它们编码具有高度重复区域的非常大的蛋白质。