Which of the following is an example of polymorphic gene interaction ?
Blood type in humans
Flower color in snapdragons
Coat color in rabbits
Height in humans
Flower color in snapdragons is an example of polymorphic gene interaction. The gene responsible for flower color has multiple alleles, each of which produces a different color phenotype. Hence option B is the correct answer.
Option(A) Blood type in humans is an example of multiple allelism and not an example of polymorphic gene interaction. Hence option A is incorrect.
Option(C) Coat color in rabbits is an example of multiple alleles and not an example of polymorphic gene interaction. Hence option C is incorrect.
Option(D) Height in humans is an example of inheritance and not an example of polymorphic gene interaction. Hence option D is incorrect.