Fig. 3

Hypothetical products generated by recombinations mediated by repeat1, repeat2, and repeat3. Repeats 1–3 were simply written as R1, R2, and R3 in the picture. The black arrows on the circular molecules represent the repeat sequences, and the colored lines represent the DNA fragment between the repeats. M1–M7 represent the conformations after rearrangement. M1 contains one circular molecule; M2, M6, and M7 contain two circular molecules; M3 and M5 contain three circular molecules; and M4 contains four circular molecules