Which chart depicts the greatest genotype x environment inte

Which chart depicts the greatest genotype x environment interaction?

Which chart depicts the lowest genotype x environment interaction?

Which chart depicts no genotype x environment interaction?

performance 2. Breed Breed 1 Breed 2 excelent average poor Environment 1 Environment 2 Environment 1 Environment 2 Environment 1 Environment 2

Solution

The Chart C depicts the greatest genotype x environment interaction.

The Chart A depicts the lowest genotype x environment interaction.

The Chart B depicts no genotype x environment interaction.

Explanation: The Charts above show the performance of genotypes breed 1 and breed 2 in two different environments.

In chart A, breed 1\'s performance falls in environment 2, while breed 2\'s performance remains same in environment 2. This implies that the particular performance/trait does have some correlation with the type of gene. The environment may have an impact if the genotype is of breed 1 but will not have any impact if the genotype is of breed 2.So the genotype x environment interaction is partial. E.g. certain genotypes may not respond to a particular drug while some may.

In Chart B the performances of both the genotypes are impacted by the same amount due to change in the environment. This implies that the performance is not dependent on the genotype but is impacted only due to the environment change. Hence this is a case of no genotype x environment interaction. E.g.. The time required for egg development reduces with increase in the temperature for all genotypes of drosophila.

In Chart C, the performance of breed 1 falls in environment 2, while performance of breed 2 rises in environment 2. This implies that the performance/trait is highly dependent on the type of genotype as well as the environment. This is a case of maximum genotype x environment interaction.