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Laboratory two strains of escherichia coli

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Reference no: EM131664366

We have in our laboratory two strains of Escherichia coli with the following genotypes:

Strain A:   ara-  met-  ser-  pyr-  lys- 

Strain B:  ara+  met+  ser+  pyr+  lys+ 

[ara- = inability to use the sugar arabinose; met-, ser-, pyr-, lys- = inability to synthesize methionine, serine, pyrimidines, and lysine]

What kind of culture media and supplements is necessary to add to the culture plates to select ara+ met+ recombinants after a mating between strains A and B?

Reference no: EM131664366

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