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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 the two kinds of nucleic acids. DNA is a double-stranded hard-copy information molecule, and is irreplaceable. RNA is a temporary soft-copy information mol â¦ ecule and is single stranded.he two types of nucleic acids are DNA and RNA. It's easy to remember because DNA is made up of 2 RNA's that are made up of the nucleic acids. 6 people found this useful. Edit.