Question

1. In 1979, T.O. Diener discovered a new infectious agent that was smaller than viruses and caused potato spindle tuber disease. 2. It was found to be a free RNA; 3. it lacked the protein coat that is found in viruses, hence the name viroid. 4.The RNA of the viroid was of high molecular weight. Regarding 1,2,3 and 4:

Answer 1

this scientist discovered curious which were free read of low molecular weight and without a protein coat. therefore, 1,2,3 are correct while 4 is false