Since all living organisms use the same four nucleotides in dna structure, what is it that makes individuals unique? a)the incidence of the stop codon in dna b)the sequence of nucleotides in the dna c)the location of the phosphate group on the dna backbone d)the number of cytosine repeats in one strand

The correct answer is "the sequence of nucleotides in the DNA".

The sequence of nucleotides determine the corresponding DNA to be transcripted to mRNA and then translated to a specific protein. The proteins synthesized from the mRNA transcript perform various functions i.e. collagen which is responsible for the tensile strength of most organs. Collectively, these proteins contribute to the overall morphology and physiology of organisms, which makes living organisms different.