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

Multiple Choice

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