By itself, it is wild type. Nfa-do-vg/Nfa-1 shows rough eye character of Nfa-1. Nfa-do-vg/Nfa-do-vg; vg1/+ produces some wing notching. Presumed by Goldschmidt to enhance dominance of vg and thus termed a 'dominigene'. RK3. wild type as hemi- and homozygote; fa with fa