While we may all be 99.9% alike, there are three billion base pairs of human DNA, which leaves at least three million points of difference (single nucleotide polymorphisms, or SNP's) between any two people. Armed with the promise of powerful new computer-driven technology, scientific attention is becoming riveted to that remaining 0.1% of genetic difference.
但这样的结论为时尚早。尽管99.9%的人类基因完全相似，但30亿对基因的庞大基数却为任何两个个体留出了300万的差异空间（即单核苷酸多态性，也叫SNP's）。运用无比强大的最新电脑技术，科学家们将注意力集中到剩下0.1%的基因差异之中。