5. Genetics of Bacteria and Viruses
Bacterial Transformation
Problem 29a
Textbook Question
Textbook QuestionA wild-type culture of haploid yeast is exposed to ethyl methanesulfonate (EMS). Yeast cells are plated on a complete medium, and 6 colonies (colonies numbered 1 to 6) are transferred to a new complete medium plate for further study. Four replica plates are made from the complete medium plate to plates containing minimal medium or minimal medium plus one amino acid4 (replica plates numbered 1 to 4) with the following results:
Identify the colonies that are auxotrophic (mutant). What growth information leads to your answer?
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