What is the phenotypic ratio obtained from a test cross of $F_1$ progeny in a monohybrid cross?

In a cross,$45$ tall and $15$ dwarf plants are produced. The genotype of the parents is .....

In a cross between plants with red and white flowers,the ratio of red to white flowered plants in the $F_2$ generation was $60:20$. If a heterozygous red-flowered plant is self-pollinated,what will be the ratio of the progeny?

If two pea plants with red flowers,whose genotypes are unknown,are crossed,$75\%$ of the offspring have red flowers and $25\%$ have white flowers. The genotypes of the red-flowered parent plants must be:

If $3^n$ is the theoretical number of different genotypes (where $n$ is the number of heterozygous gene pairs),then the number of different genotypes produced by a pea plant with the genotype $AaBbCcDdEeFfGg$ is:

Find out the percentage of dominant phenotype in a cross between $Pp$ and $Pp$. ($P$ = dominant,$p$ = recessive) (in $, \%$)