Noun. 1. axon-long nerve fiber that conducts away from the cell body of the neuron. axone. nerve fiber, nerve fibre-a threadlike extension of a nerve cell.nerve cell, neuron-a cell that is specialized to conduct nerve impulses. nerve end, nerve ending-the terminal structure of an axon that does not end at a synapse.oun. 1. axon-long nerve fiber that conducts away from the cell body of the neuron. axone. nerve fiber, nerve fibre-a threadlike extension of a nerve cell.
The genetic code is a nearly universal language that encodes directions for cells. The language uses DNA nucleotides, arranged in codons of three, to store the blueprints for amino acid chains.
The Genetic Code. The genetic information in the mRNA is composed of an alternating sequence of the four bases adenine (A), guanine (G), cytosine (C) and uracil (U). This alternating sequence provides the unique code specifying each of the 20 amino acids naturally found in protein. 20 amino acidsÂ».he genetic information in the mRNA is composed of an alternating sequence of the four bases adenine (A), guanine (G), cytosine (C) and uracil (U). This alternating sequence provides the unique code specifying each of the 20 amino acids naturally found in protein. 20 amino acidsÂ».