When a cross is made between red flowered snapdragon and white flowered snapdragon and F₁ hybrids are selfed, the phenotypic ratio of ${\mathrm{F}}_2$ generation would be

Inheritance pattern in snapdragon flower with respect to flower colour is partial or semi dominance or incomplete dominance. The red flowered plant when crossed with white flowered plant, in ${\mathrm{F}}_1$generation all the plants obtained are pink flowered. When selfing is done in ${\mathrm{F}}_1$individuals, in ${\mathrm{F}}_2$ generation the red, pink and white flowered plants are obtained in 1:2:1 ratio which deviates from mendelian ratio for monohybrid cross.