DNA is source code, and there is a bunch of RNA processes that read it and do stuff to make you live. Parts of DNA can be turned on and off, that’s called expre

DNA is source code, and there is a bunch of RNA processes that read it and do stuff to make you live. Parts of DNA can be turned on and off, that’s called expression. Epigenetics is the study of how genes are expressed. Gene expression can change without the genome itself changing depending on external conditions, which is a key part of adaptability.