Table II. Δrad27, pol3-t and Δmms19 mutations increase the recombination potential of distantly separated, diverged inverted Alu repeats.

Orientation of Alu pairs	Distance (bp)	Homology (%)	Recombination rate (× 107)
			wt	Δrad27	pol3-t	Δmms19
Direct	12	100	4 (3–5)	23 (17–38)	26 (11–37)	3 (2–5)
Inverted	100	94	6 (5–12)	110 (83–164)	145 (90–223)	104 (87–123)

Median rates and 95% confidence intervals (in parentheses) were calculated as described in Materials and methods.