17. Mutation, Repair, and Recombination
Induced Mutations
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: Are there any colonies for which genotype information cannot be determined? If so, which colony or colonies?
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