Voice 2: The order of the code is different in every person. But the code is normally only different in a very small way. Most of the letters of the DNA code are in a similar order in every person! But the very small differences in the code are very important for the way a person looks. These small differences are the reason for different hair or eye colours.
声音2：每个人的密码顺序都不同x,ilI@Hy7m。但是这些密码通常只存在极小的不同L2h5|rb(c-。DNA密码中大多数字母的顺序在每个人体内是类似的！但是密码中这一极小的差异对一个人的外貌具有重要影响0N#;QiY_rLEJBFEpuQ,。这些细微的差异决定了人们头发或眼睛的颜色nN(;8F5eJyKaxx0Ii。
Voice 1: In 1986, a group of American scientists had an idea. They wanted to map human DNA. They wanted to discover the order of the DNA codes.
声音1：1986年，一组美国科学家产生了一个想法M_X!9sKH-.,.alHI5qr。他们想绘制DNAUy#N[6HoE=q7EK。他们想了解DNA密码的顺序8,xSiuIvQuR^Krr(Wy。

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