Table 4.

Frequency of MULEs, Pack-MULEs and MULEs with multiple TIRs in four different plant genomes.

Element type	Arabidopsis	Tomato	Rice	Maize
MULEs	1576	28041	30475	12900a
Pack-MULEs	46b (2.92)	220 (1.6)	2853b (9.4)	276b (2.1)
MULEs with multiple TIRS	11 (0.70)	61 (0.22)	4 (0.01)	2 (0.02)

Number in parenthesis indicate percentage from total number of MULEs.

^aSchnable et al., 2009 [17]

^bJiang et al., 2011 [19].