How many types of gametes may be produced by genotype $D/d : E/e : F/f$?

In a dihybrid cross,considering the characteristics of the $F_1$ generation obtained from the parental generation and the $F_2$ generation,how many types of gametes (pollen grains) will be produced by the $F_1$ generation?

$A$ pure tall plant with green pods is crossed with a pure dwarf plant with yellow pods. How many dwarf plants will be produced out of $16$ in the $F_2$ generation?

To determine the different types of gametes produced by a pea plant with the genotype $AaBb$,with which genotype should it be crossed?

Describe Mendel's experiment on pea plants involving two different traits.

Which genotype represents a true dihybrid condition?