In a transduction experiment with E. coli and three genes of interest (gal, thi, and thr), gal & thi are co-transduced 10% of the time, thi & thr are co-transduced 50% of the time, and thr & gal are co-transduced 25% of the time. Which gene is in the miIDle?
a. thi
b. gal
c. thr