A cross is made between pure tall pea plant with green pods(TTGG) to dwarf pea plants with yellow pods(ttgg). In F2 generation 16 plants are formed, in this, tall green are 9, tall yellow are 3, dwarf green are 3 dwarf yellow are 1.
Tall plants are 12, green plants are 12, dwarf plants are 4, yellow plants are 4 are formed.
So, the correct option is ‘12’