  The number of atoms in the four ribonucleotides uridine monophosphate,
cytidine monophosphate, adenine monophosphate and guanine monophosphate is
taken as a key parameter. A mathematical relation describing the condensation
of the three basic subunits a nucleobase, a ribose and a phosphate group, to
form a ribonucleotide, is first obtained from this parameter. Next, the use of
the latter and Euler totient function is shown to lead to the atom number
content of the 64 codons and also to Rakocevic pattern. Finally, selected
finite sums of Fibonacci numbers are shown to lead to the nucleon number
content of the amino acids in various degeneracy patterns, and also to the
multiplet structure of the 20 amino acids as well as to the degeneracy.
