Specific radioacitve identification of ribosomal RNA can be achieved by using C ¹⁴ labelled

Step-by-step solution

The pyrimidine, thymine and the sugar deoxyribose are incorporated into DNA, not RNA. Adenine, cytocine and guanine are incorporated into DNA, not RNA. Adenine, cytosine and guanine are incorported into both RNA and DNA. Ribose sugar and the base uracil are specific to all the forms of RNA.