In the given figure, it is quite clear that it is a test cross of a heterozygous male with a homozygous female. In the F1 generation following phenotypic feature are observed: Half of the progeny are Heterozygous Tall (Tt) Another half of the population is Homozygous short (tt) Hence the ratio for phenotypic features is same as genotype ratio, which is 2:2 or 1:1