The genetic code that makes up your DNA is composed of 4 nucleotide bases adenine (A), thymine (T), guanine (G) and cytosine (C)- ATGC. The sequence of how these 4 bases are strung together make the blueprint to you. 

Wow- that's "T.N.T- dynamite!" 

ps- when this prints the letters come out a dark red color.

pps- Marshall Nirenberg is credited with "cracking the genetic code" but deciphering the code was no small feat- ck out how it went down!