Inheritance pattern of flower colour in garden pea plant and snapdragon differs. Why is this difference observed ? Explain showing the crosses upto `F_(2)` generation

Explanation

(i) Inheritance pattern of flower colour in garden pea plant

`{:("Phenotypic Ratio Purple : White "),(" 3 : 1 "),("Genotypic Ratio PP : Pp : pp"),(" 1 : 2 : 1 "):}`
Inheritance of flower colour in garden pea shows true dominance . In `F_(1)` - generation, dominant colour purple is expressed and in `F_(2)` -generation both dominant (purple) and recessive (white) colour are expressed in the ratio of 3 : 1
(ii) Inheritance pattern of flower colour in snapdragon is given below

`{:("Phenotypic Ratio Red : Pink : White "),(" 1 : 2 : 1" ),("Genotypic Ratio RR : Rr : rr"),(" 1 : 2 : 1 "):}`
Inheritance in snapdragon flower colour shown incomplete dominance. In this phenomenon. neither of the two alleles are completely dominant over the other and the hybrid is intermediate between the two. Hence , red is a homozygous dominant, white is a homozygous recessive, while hybrid is an intermediate, i.e. pink