Solution
1) Thymine is one of the pyrimidine nitrogen base present in nucleic acids. It is present in DNA,
absent in RNA instead Uracil is present. When a nitrogenous base Thymine is linked to a pentose
sugar, a nucleoside is formed that is Thymidine. The nucleosides of DNA are commonly referred
to as deoxynucleosides ( deoxythymidine). When a phosphate group is added to a nucleoside a
nucleotide is formed. when thymidine is phosphorylated with one, two or three phosphate groups
it forms thymidine mono, di or triphosphates (dTMP, dTDP & dTTP) correspondingly.