Parents : TtYy = Tall and Yellow and Ttyy = Tall and Green
Gamenets formed : From TtYy = TY , Ty , tY , ty and From Ttyy = Ty , ty
In F1 generation 8 gametes are formed using a Punnett square that is
TY x TY = TTYy = Tall and Yellow
TY x ty = TtYy = Tall and Yellow
Ty x Ty = TTyy = Tall and Green
Ty x ty = Ttyy = Tall and Green
ty x Ty = Ttyy = Tall and Green
ty x ty = ttyy = Dwarf and green
tY x Ty = TtYy = Tall and Yellow
tY x ty = ttYy = Dwarf and green
Phenotype : Tall yellow : Tall green : Dwarf yellow : Dwarf green would be 3 : 3 : 1 : 1 respectively.
Therefore the proportion of tall and green phenotype is 3/8 and the proportion of dwarf and green phenotype is 1/8.