摘要: 题目All DNA is composed of a series of nucleotides abbreviated as A, C, G, and T, for example: "ACGAATTCCG". When studying DNA, it is sometimes useful t... 阅读全文
posted @ 2015-02-11 12:01 哲人善思 阅读(7827) 评论(5) 推荐(0) 编辑