Another Drosophila gene, apterous, also affects early wing development, with apterous mutants having an identical phenotype to vestigial mutants (i.e. both mutants have small and deformed wings). A similar experiment to our one for vestigial and curved was performed with vestigial and apterous instead, the results indicated that the F1 progeny were wild-type. What phenotypic ratio would you expect in the F2?

Consider the different types of gene interactions.