Table 2. Relative survival tests.

	Δ16/16+		T7+/16+
	16wt	16 I754T
Before UV	66/34	45/55	39/61, 55/45
After UV	96/4	95/5	40/60, 47/53
$\widehat{\text{Ω}}$	12.4	23.2	1.04, 0.73

Notes:

Each term in a ratio is a number of plaques (out of 100) that typed a particular way. The denominator is always the number of plaques for the 16⁺ phage (14–37), a wild-type T7 derivative that carries a T3 gene 1.2 insert in T7 gene 3.8. The numerator is the number corresponding to the other phage in the mix, as given at the top of the column. Ω values apply to the phage in the numerator. The rightmost column evaluates the effect of the small insert in JB14-37 against a T7⁺ phage lacking the insert; there is no evidence of an effect.