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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Eduncle Best Answer
The two-step approach : (1) determine the underlying principle, and (2) draw a diagram. Here the principle is clearly that each Hfr strain donates genetic markers from a fixed point on the circular chromosome and that the earliest markers are donated with the highest frequency. By visualizing the time graph for both Hfr strains the order can be deduced. The marker which has less time enters early and vice versa.