Heavy metals, such as copper, are required for proper development. However, if too much copper is present it can lead to developmental defects. A scientist was interested in studying the developmental defects that could occur at various concentrations of copper. Genetically identical organisms were grown in 6 different concentrations of copper. This experiment evaluates a(n) ________.
A) epistasis
B) dominant trait
C) recessive trait
D) norm of reaction

Question

Quizplus · Accepted Answer

This experiment evaluates the norm of reaction, which refers to how a genotype responds to different environmental conditions. In this case, the environment is the concentration of copper, and the phenotype (developmental defects) is measured for each level of copper.

Heavy Metals, Such as Copper, Are Required for Proper Development