(Answered) 1 rna is partly made of the base uracil what are the two

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1. RNA is partly made of the base uracil. What are the two possible methods that a cell may employ to be certain that it has uracil?

2. Suppose that you have a particular S. cerevisiae mutant strain that cannot make the amino acid leucine. Will the strain grow on a YPD plate? What about a SD plate? How could you modify the SD plate to allow this strain to grow?

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