Question

first discovered RE?​

Answer 1

Answer:

The two discovered a new element in a molybdenum sample that was used in a cyclotron, the first synthetic element to be discovered, though it was later found out that it does occur naturally in minuscule trace quantities. It had been predicted by Mendeleev in 1871 as eka-manganese.

Explanation:

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Answer 2

Answer:

In that paper , Kathleen Danna and Daniel Nathans of Johns Hopkins University (Baltimore) showed for the first time that the restriction enzyme called “endonuclease R,” discovered by Hamilton Smith and Kent Wilcox ( 2), could be used to produce specific fragments of simian virus 40 (SV40) DNA.