AP and TS EAMCET Medical 2020 Model Paper 2

In which of the following crosses both phenotypic and genotypic ratios at F2 generation are 1:2:1.
I. Red flowered plant crossed with white flowered plant in Snapdragon
II. Tall plant crossed with dwarf plant in garden pea plant
III. Plant with dotted seed coat crossed with spotted seed coat in lentil plant
IV. A homozygous plant crossed with a heterozygous plant