In E. coli, a P1 generalized transduction was carried out using a donor strain of ara+ leu+ ilvH+ genotype. The recipient strain was ara- leu- ilvH-. 381 ara+ transductants were first recovered and then the remaining genotypes of these 381 were determined and the results are shown below: Which gene is in the middle?
A) ara
B) leu
C) ilvH
D) ara or ilvH
E) leu or ara
Correct Answer:
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