And fact number four, the genetic code is degenerative. Now, what do we mean by that? Well, remember in fact number one, we said that we have a sequence of one, two, three nucleotide. So a codon, and this is basically used to correspond to those amino acids. Now we have four times four times four gives us 64 possibilities. So there are 64 unique possibilities for our codon, and that's way more than the number of amino acids.