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well i am not sure what are you asking but if you think the units that form DNA and RNA then the answer would be NUCLEOTIDES ...there are 4 types of nucleotide ... ADENINE THYMINE GUANINE CYTOSINE in case of DNA and in case of RNA THYMINE is substituted with URACIL. Arizona D Â· 7 years ago.
DNA and RNA are polymers consisting of monomres called nucleotides, which are composed of a sugar (deoxyribose for DNA and ribose for RNA), a phosphate group, and a nitrogeno â¦ us base (Adenine, Thymine, Cytosine, and Guanine for DNA, and Adenine, Uracil, Cytosine and Guanine for RNA). single nucleotide contains a phosphate group, deoxyribose or ribose (depending on the nucleic acid) and a nitrogen base, which can be adenine, guanine, cytosine â¦ , thymine, and uracil. These monomers combine to form polymers known as DNA or RNA.