Which genotype characterises an organism that is heterozygous for two genes?

The phenotypic ratio of a dihybrid cross is ....

In a dihybrid cross experiment,what is the phenotypic ratio obtained from the test cross of $F_1$ generation plants?

If $AAbb \times aaBB$,then the phenotypic ratio of its $F_{2}$ progeny will be

$A$ cross was made by Mendel with pea plants between violet flowers $(VV)$ in axial position $(AA)$ and white flowers $(vv)$ in terminal position $(aa)$. What phenotypic ratio of white flowers $(vv)$ did he receive in the $F_2$ generation (in $/16$)?

In a dihybrid cross between $RRYY$ and $rryy$,what is the probability of obtaining $RrYy$ in the $F_{2}$ generation (in $/16$)?