Question

Which one among the following bases is present in RNA but usually not in DNA ?

Nucleic acids are the polymers of nucleotides which in turn consist of a base, a pentose sugar and phosphate group. Nucleic acids are responsible for the transfer of characters from parents to offsprings. There are two types of Nucleic acids – DNA and RNA. DNA is the chemical basis of heredity and have the coded message for proteins to be synthesised in the cell. Answer the following :