How many types of gametes and in what ratio will be produced by a dihybrid heterozygote?

$A$ cross between two pea plants,tall with axial flowers and dwarf with terminal flowers,produced offspring that were tall with axial flowers and tall with terminal flowers in the ratio $1:1$. What will be the genotype of the parents?

In plants,red color $(R)$ is dominant over yellow $(r)$ and tallness $(T)$ is dominant over dwarfness $(t)$. If a plant with genotype $RRTt$ is crossed with a plant with genotype $rrtt$,what will be the result?

In Mendel's dihybrid cross experiment,out of $16$ offspring,how many offspring possess the genotype $rrYy$?

$A$ dihybrid for qualitative traits is crossed with a homozygous recessive individual of its type. The phenotypic ratio is:

In the $F_2$ generation of Mendel's dihybrid cross,which phenotype is observed with the highest frequency?