Genetically Engineering Physical Features

We are starting to learn how DNA controls the development of physical structures. Researchers have been able to modify the shapes of various features of developing mice by changing their “non-coding” DNA.

It turns out that so-called “junk DNA”, or “non-coding DNA” is actually the program that controls the use of the coding DNA, and it’s startlingly like a programming language, with switches to turn on and off the use of other parts of the genome depending on context, control flow expressions, and many more.