TABLE 3.

Comparison of spectra of non-IS-mediated spontaneous mutations in ebgR and lacI

Category	ebgRa		lacIb
	n	%	n	%
A:T→G:C	11	6.9	5	2.6
G:C→A:T	29	18.2	45	23.0
G:C→T:A	51	32.0	13	6.6
G:C→C:G	5	3.1	3	1.5
A:T→C:G	13	8.2	7	3.6
A:T→T:A	13	8.2	7	3.6
Deletions	14	8.8	72	36.7
Frameshifts	19	12.0	37	18.9
Duplications	4	2.5	7	3.6
Total	159	100	196	100

^aCombined growth-dependent and adaptive mutations from Table 2. 

^blacI data are from reference 14 and do not include the frameshift hot spot.