Adding a new gene - or simply changing how a gene is regulated (how active it is) - rarely affects just a single thing.

添加一个新基因——或者仅仅改变一个基因的调节方式（即其活性程度）——几乎不会只影响一件事。

However, the biggest factor that sets axolotl regeneration apart may not be a set of unique genes, but how they regulate their genes.

然而，蝾螈再生与众不同的最大因素可能不是一组独特的基因，而是它们如何调节自己的基因。

The rest, once dismissed as " junk DNA, " is now known to contain elements that play critical roles in regulating gene activity, contributing to the complex orchestration of biological processes.

其余的部分曾经被视为“垃圾DNA”，现在已知它们含有在调节基因活动中发挥关键作用的元素，有助于生物过程的复杂协调。

Its richness continues to surprise: in 2009, for example, more than 250 previously unknown proteins were identified within it; in 2015 it yielded up 300 new microRNA molecules, which regulate gene expression throughout the body.

它的丰富程度持续令人惊讶：例如， 2009年，人们在其中发现了250多种以前未知的蛋白质；2015年， 人们在其中发现了300种新的microRNA分子，它们可以调节全身的基因表达。