Chapter 20, Problem 4TYK

Once the gene that causes Huntington disease was found, researchers introduced the defective allele into mice to create an animal model of the disease. Why was this model valuable?

a. It allowed the testing of potential drug therapies without endangering human patients.

b. It allowed the sequencing of the mutant allele.

c. It allowed the production of large quantities of the huntingtin protein.

d. It allowed the study of how the gene was transmitted from parents to offspring.