64 codons
The genetic code includes 64 possible permutations, or combinations, of three-letter nucleotide sequences that can be made from the four nucleotides. Of the 64 codons, 61 represent amino acids, and three are stop signals. For example, the codon CAG represents the amino acid glutamine, and TAA is a stop codon.
This happenes in Mitosis phase 1
Hope this helps
Btw what grade r u in
Three elements of the spinal string
1. Forms reflexes
2. It is the site for combination (summation) of EPSP's and IPSP's
3. It is a conduction pathway for tactile and engine nerve motivation