Two small plasmids undergoing recombination will look like a figure 8. If they are each cut once at a unique restriction site, they will form a Chi structure. Which of the following will be true
A) each of the arms of the Chi structure will be a different length
B) each of the arms will be the same length
C) two of the arms will be the same length and the other two arms will be the same length
D) three of the arms will be the same length and the fourth arm will be a different length
E) none of the above are true

Question

Quizplus · Accepted Answer

The Chi structure is formed when two plasmids undergo recombination after being cut at a unique restriction site. In this structure, two of the arms will be the same length because they come from the same plasmid, while the other two arms will also be the same length, coming from the second plasmid that underwent recombination. Therefore, choice C is the correct answer.

Two Small Plasmids Undergoing Recombination Will Look Like a Figure