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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.
Nucleotides are the basic structural units of nucleic acids, which control the production of proteins in living organisms. The nucleotides are made up of a phosphate group, a pentose sugar, and a nitrogen base.This shows the basic structure of a nucleotide.This example has the sugar ribose, and is characteristic of RNA.he nucleotides are made up of a phosphate group, a pentose sugar, and a nitrogen base. This shows the basic structure of a nucleotide. This example has the sugar ribose, and is characteristic of RNA.