Wobble-position -This refers to
the 3rd position of a codon. This position can vary in some codons encoding
the same amino acid . It explains why many mRNA codon words translate to
a single amino acid, why there are appreciably fewer tRNA's than mRNA codon
types and why the redundant nature of the genetic code translates into
a precise set of 20 amino acids .i.e There are 61 codons but only 20 amino
acids.