The phenotypic ratio of a Mendelian monohybrid cross is $-$

When Mendel crossed a true-breeding white-flowered strain of peas with a true-breeding red-flowered strain,the individuals in the $F_2$ generation represented:

$A$ cross was made between a pure tall and a pure dwarf pea plant to produce progeny. The progeny was self-pollinated. Find the ratio of the resulting true-breeding tall and dwarf plants.

Using a Punnett square,work out the distribution of phenotypic features in the first filial generation after a cross between a homozygous female and a heterozygous male for a single locus.

When a homozygous red-flowered pea plant is crossed with a white-flowered plant, what color will be produced in the $F_1$ generation?

The phenotypic ratio of a monohybrid cross in Mendelian genetics is .....