If the genetic code used four bases as a code instead of three then 256 units could be encoded.
Explanation:
There are 4 DNA bases that can make up the hereditary code. On the off chance that the codon for every amino corrosive was comprised of just 2 bases, just 16 unique codons would be conceivable.
Given:
1 Bases = [tex]4[/tex] DNA bases
2 Bases = [tex]4^2 = 16[/tex] DNA bases
3 Bases = [tex]4^3 = 64[/tex] DNA bases
4 Bases = [tex]4^4 = 256[/tex] DNA bases
Unmistakably this isn't sufficient. Be that as it may if every ha a codon made up of 3 bases (similar to the case) there are 64 potential blends which are all that could possibly be needed.
So for 4 bases, just 256 unique codons would be conceivable.