In Drosophila, allelic series of gene w+ determine the color of an eye. w+ determines red color (wild type), we determines eosin color and wa – apricot color. The allelic realtions are w+ > we > wa > w.
A fly with eosin eyes was crossed with a fly with apricot eyes. Write down the cross showing the genotypes for P. F1, F2 and a ratio observed in F2.