Are there any colonies for which genotype information cannot be determined? If so, which colony or colonies?

Please see below

Explanation:

It is colony number 6. The genotypic information cannot be determined in this case since it did not grow on any of the four replica plates with minimal medium and a unique amino acid. Every other colony (1 to 5) did grow a least once on either of the replica plates. So there is no hint given towards colony six's genotype.

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