Which type of research technique was used to track newly synthesized rna within a eukaryotic cell?

synthesize a pre-rRNA 45S (35S in yeast), which matures and will form the major RNA sections of the ribosome. RNA polymerase II synthesizes precursors of mRNAs and most snRNA and microRNAs. RNA polymerase III synthesizes tRNAs, rRNA 5S and other small RNAs found in the nucleus and cytosol.

Explanation:

the growth of the plants is affected by the heat of the light. what is the student doing?