A Rare Disease Is Now Understood to Be Caused by a Single

Multiple Choice

A rare disease is now understood to be caused by a single mutant gene.When the researcher learns that the gene encodes a ________,he says "Oh good! We may be able to treat the disease with recombinant protein produced in E.coli and delivered by injection."

A) protein hormone
B) cell-surface receptor
C) ribozyme
D) component of chromatin
E) mitochondrial enzyme