When Clausen and colleagues grew genetically identical individuals of the yarrow plant at different elevations,the results are shown in the accompanying figure.This observation verifies that ________.
A) yarrow plants mutate quickly when grown in different environments
B) the genotypes of yarrow plants has nothing to do with how tall these plants grow
C) yarrow plants grow taller at lower elevations and shorter at higher elevations regardless of their genotype
D) the genotypes of yarrow plants interacts with environmental influences to produce the phenotype

Question

When Clausen and colleagues grew genetically identical individuals of the yarrow plant at different elevations,the results are shown in the accompanying figure.This observation verifies that ________. 
A) yarrow plants mutate quickly when grown in different environments 
B) the genotypes of yarrow plants has nothing to do with how tall these plants grow 
C) yarrow plants grow taller at lower elevations and shorter at higher elevations regardless of their genotype 
D) the genotypes of yarrow plants interacts with environmental influences to produce the phenotype

Quizplus · Accepted Answer

The experiment grew genetically identical individuals of the yarrow plant at different elevations, and the results showed that the plants' height varied based on their genotype and environmental influences. This verifies that the genotypes of yarrow plants interact with environmental influences to produce the phenotype, making choice D the correct answer. Choice A is incorrect because the experiment does not provide any evidence that yarrow plants mutate quickly when grown in different environments. Choice B is incorrect because the experiment shows that genotype does play a role in how tall the plants grow. Choice C is also incorrect because the experiment reveals that the height of the plants varied based on their genotype and environmental influences.

When Clausen and Colleagues Grew Genetically Identical Individuals of the Yarrow