Gene-for-Gene Hypothesis was based on the interaction between –

Correct option is C

✅ Correct option: (c) Flax and Melampsora lini
· H.H. Flor proposed the Gene-for-Gene concept based on flax vs flax rust fungus interactions.
· For each host resistance (R) gene, there is a corresponding pathogen avirulence (Avr) gene.