Assuming no sequencing errors, two DNA sequences TGAC and CATGA can be assembled into the original sequence in two different ways: TGACATGA and CATGAC. What is the probability of the original sequence being CATGAC by random chance? (Assume that each of the four nucleotides occurs with the same frequency.) O (1/4)4 O (1/4)2 O 1/4 O 1/4)8

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