Genetic Markers Must Be Polymorphic

Multiple Choice

Genetic markers must be polymorphic. Why is polymorphism an important characteristic of genetic markers?

A) The various phenotypes help to identify the actual gene responsible for a genetic disease.
B) Polymorphisms provide biochemical and physiological information about the disease.
C) Knowledge of the gene sequence allows for identification of the protein.
D) Radioactive labels can be added for easy identification of the disease.
E) They can be easily visualized as bands on an electrophoresis gel.