Question

The table above summarizes the results of a replica-plating experiment where a mixture of 347 E. coli strains of different genotypes were tested for their ability to growth on a variety of media. Based on the data presented in the table above: A. how many colonies are met(+) arg(-)? B. how many colonies are amp(R) met(-) arg(+)? C. how many colonies are amp(R) met(-) arg(-)? D. how many colonies are amp(S) met(+) arg(+)? can you give a detail explanation? I keep finding different answers and I don't find the logic.

Medium Number of colonies that grew 347 Complete medium (contains all amino acids, vitamins, and a variety of carbon sources) Complete medium + ampicillin Minimal medium (glucose as a carbon source) 71 261 51 303 Minimal medium + ampicillin (an antibiotic) Minimal medium +methionine (an amino acid) Minimal medium +arginine (an amino acid) Minimal medium +methionine+ampicillin Minimal medium + arginine+ampicillin

Answer 1

Answer:

$\rightarrow$A. 301-261=40

$\rightarrow$B.57-51=6

$\rightarrow$C.4

$\rightarrow$D.261-51=210

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