is thymine and uracil doesn't have phosphate group

Answer 1

Both thymine and uracil are nitrogenous bases found in nucleic acids, but they do not have a phosphate group attached to them in their basic forms. The phosphate group is a component of the nucleotide structure, which includes a nitrogenous base, a five-carbon sugar (ribose or deoxyribose), and one or more phosphate groups.