If pure tall and dwarf pea plants are crossed, the genotype of progeny is
TT
Tt
tt
TT or Tt
Pure tall (TT) plant produces gamete (T), and dwarf plant (tt) produces gamete (t); they combine to form progeny with genotype (Tt).
What is the genotypic ratio of plants in F2 generation when a tall pea plant (TT) is crossed with a dwarf pea plant (tt)?