Which one of the following pair is a purine pair?
Uracil, Guanine
Cytosine, Thymine
Adenine, Guanine
Adenine, Thymine
The successive nucleotides of $RNA$ are covalently linked through or antiparallal
Nucleotides are linked by
$DNA$ is double helix and
Which one of the following is not applicableto $RNA$ ?
$DNA$ polymerase links nucleotide by forming which type of bond: