TABLE 1.

Average trait means for control intrastrain crosses

Female	Male	Dysgenesis (n)	Sex ratio (se)	Viability (se)
TE−	TE−	0.0 (1398)	0.488 (0.016)	0.844 (0.055)
TE+	TE+	0.0 (575)	0.516 (0.014)	0.571 (0.057)
D. lummei	D. lummei	0.0 (335)	0.521 (0.015)	0.411 (0.067)

Note: These values are used as baseline in statistical models testing for increased reproductive isolation in interspecis crosses. For male dysgensis (n) refers to the number of male progeny scored. The number of replicates used to calculate the standard error are n = 22 (TE−), n = 23 (TE+), and n = 20 (D. lummei).

Abbreviation: SE = standard error.