Question: Genotype x environment interaction (GxE) would take place when there is/are:
Options:
One genotype and two environments
Two genotypes and one environment
Three genotypes and one environment
Two or more genotypes and two or more environments
Genotype x environment interaction (GxE) refers to the phenomenon where different genotypes respond differently to different environmental conditions. This means that the expression of a trait depends on the interplay between the genetic makeup of an individual (genotype) and the environment in which it develops.
• Therefore, for GxE to occur, you need:
● Multiple genotypes: If you only have one genotype, there's no comparison to see if it responds differently to different environments.
● Multiple environments: If you only have one environment, you can't assess how different genotypes might respond differently to varying conditions.
• Examples:
● Plant height: Some plant varieties might grow taller in fertile soil with ample sunlight, while others might perform better in less fertile conditions with partial shade. This demonstrates GxE for plant height.
● Disease resistance: Some animal breeds might be highly resistant to a disease in certain climates but more susceptible in others, showcasing GxE for disease resistance.