Table 1.

The 15 characterized NAHR breakpoints within AZFa-HERVs

Study	Type of rearrangement	Independent rearrangements	Breakpoint in ID1	Breakpoint in ID2
[9]	Deletion	1	0	1
[9]	Gene conversion*	2	2	2
[14]	Deletion	6	4	2
[15]	Deletion	2	1	1
[25]	Duplication	2	2	0
		Total	9	6

*These gene conversion events appear to be associated with a double-crossover mechanism, and so each gene conversion event is associated with two breakpoints (see Figure 10b).