The allele responsible for yellow coat color in mice also causes a diabetes-like condition, obesity, and an increased propensity to develop tumors. Which term best describes this allele and why?
The allele is discontinuous because mice only have two options: have a yellow coat or do not have a yellow coat.
The allele is pleiotropic because one gene affects multiple characteristics.
The allele is a phenocopy because the characteristics result from the environment, not genetic inheritance.
The allele is polygenic because many genes work together to determine a characteristic.