生命组学
A gene cluster is part of a gene family. A gene cluster is a group of two or more genes found within an organism's DNA that encode for similar polypeptides, or proteins, which collectively share a generalized function and are often located within a few thousand base pairs of each other.
两个gene个共用一个promoter，成cluster。
方向性和变化性的不同状态反应cluster稳定性。物种之间，从大到小比较，
分散基因对DPG
核小体的结构使得gene序列成周期性。因为在染色体打开时，核小体之间的部分被损伤，随之被修复，被修复的速度慢于转录，所以当这两种机器相撞时，转录会从头开始。因此5’端的数据会再重复一次。
拉马克主义变异就是常用的有用的变异将会保留。
达尔文主义变异是随机变异。
