genetic chains acid individual nucleotides. Nucleotides are the building blocks of deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). Individual nucleotide monomers (single units) are linked together to form polymers, or long chains.DNA chains store genetic information, while RNA chains perform a variety of roles integral to protein synthesis.Individual nucleotides also play important roles in cell metabolism.enetic chains acid individual nucleotides. Nucleotides are the building blocks of deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). Individual nucleotide monomers (single units) are linked together to form polymers, or long chains.