A tall true breeding garden pea plant is crossed with
a dwarf true breeding garden pea plant. When the
F1 plants were selfed the resulting genotypes were
in the ratio of :
(1) 1 : 2 : 1 :: Tall homozygous : Tall heterozygous
: Dwarf
(2) 1 : 2 : 1 :: Tall heterozygous : Tall homozygous
: Dwarf
(3) 3 : 1 :: Tall : Dwarf
(4) 3 : 1 :: Dwarf : Tall