Pure tall plants are crossed with pure dwarf plants. In the $F_1$ generation all plants were tall. These tall plants of $F_1$ generation were selfed and the ratio of tall to dwarf plants obtained was $3 : 1$. This is called

Gametes produced by a homozygous individual is/are of .... types

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

A tall true breeding garden pea plant is crossed with a dwarf true breeding garden pea plant. When the $F_1$ plants were selfed the resultinggenotypes were in the ratio of

The percentage of heterozygous individuals obtained in $F_2$ generation from selfing the plants with genotype $Rr$ would be

Percentage of recessive phenotype in a cross between $pp$ and $Pp$, when $P$ is dominant, $p$ recessive