Table 1.

Nonrandom mating in multiple-choice tests in flies derived from the opposite slopes of “Evolution Canyon”

The maximum possible number of pairs per each of the six variants is 240. P, % is the proportion of same-slope pairs in the test, and χ² is testing for significance the assumption H₀ = “no mate choice” (with  

^*,  

^**, and  

^** indicating significant deviation from H₀ at P < 0.05, 0.01, and 0.001, respectively).