To demonstrate the response of several Daphnia genotypes across a wide range of environments,Luc De Meester (1996)measured the change in phototactic behavior of Daphnia sampled from lakes that contained different numbers of predatory fish.Some genotypes altered their behavior in the presence versus absence of fish.The variation in response is termed ________.
A) phenotype-by-environment interaction
B) genotype-by-environment interaction
C) induced response interaction
D) reactive response interaction

Question

Quizplus · Accepted Answer

The variation in response of Daphnia genotypes in different environments, specifically in the presence or absence of predatory fish, indicates a genotype-by-environment interaction. This means that the response of different genotypes is influenced by the environment they are in.

To Demonstrate the Response of Several Daphnia Genotypes Across a Wide