Table 3.

Self-Insertion Preference of Some MITEs in Rice

Elements	Castaway	Gaijin	Ditto	Stowaway
Copies of the element in 30.2 Mb of genomic sequence	225	486	345	2690
Total size (kb)	76	71	89	561
Insertions by MITEs	29	23	53	104
Self-insertions	20 (69%a)	16 (70%a)	13 (25%a)	77 (71%a)
Insertion frequency by all MITEsb	0.38c	0.32	0.60c	0.19
Self-insertion frequencyb	0.26	0.23	0.15	0.14

^aPercentage of self-insertions.

^bInsertion frequency equals insertions into the element divided by the total size (kb) of the element.

^cP < 0.01 compared with the average insertion frequency (0.223) in the genome by χ² test.