<span>Sugar - Either ribose or deoxyribose (in RNA or DNA)
Nitrogenous base - Adenine, guanine, cytosine, thymine (only in DNA), uracil (only in RNA)
Phosphates - One to three, two of which are usually hydrolyzed to
provide the energy to attach the nucleotide and form the phosphodiester
bond </span>
When the probe dna is inserted into a patient’s genome the genome reacts to the person dna which causes the a reaction to the nerve cells