Inheritance pattern of flower colour in garden pea plant and snapdragon differs?

cbse
principleinheritance

#1

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.


#2

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

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:

Inheritance in snapdragon flower colour shows 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.