Another important feature of the genetic code is that it is a universal code, used by all life on earth. There are minor differences encountered in some organims. Some people have attached a great deal of religious significance to this, asserting that these tiny differences are messages from the Lord to prove His existence. But if God wanted attention that badly he could just as easily have set up his own website, or spelled out "Jehovah was here" in our chromosomes. Besides, the overall correspondence of the code is the same across all phyla. The same codon that specifies tyrosine in a slime mold specificies tyrosine in Ringo Starr. This has serious implications for evolutionary biology, suggesting that all life on earth springs from a common ancestor. You can’t pick your relatives.