In an experiment similar to the Lederberg and Tatum experiment, researchers grew

Question

In an experiment similar to the Lederberg and Tatum experiment, researchers grew two strains of E. coli in complete medium. E. coli strain AX has the genotype Amp^S bio + trp+ leu-. E. coli strain AY has the genotype Amp^R bio- trp- leu+. The researchers then plated the bacteria on different media types. Next the researchers repeated the experiment in Part C but instead of mixing the AX and AY strains, they put one strain on each side of a glass U-tube. The U-tube contains a glass filter between the two strains of bacteria that prevents the cells from interacting directly. On which type(s) of media would you expect cells from the AY side of the U-tube to grow? Select all that apply. bio- leu- bio- trp- trp- leu- leu- trp- bio- none of the above

Explanation / Answer

has the e coli strain has the genotype which is able to utilise leu trp bio so it requires all the three

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