Expanding Repeats Have Been Found in Several Diseases

Multiple Choice

Expanding repeats have been found in several diseases. How do expanding repeats cause a disease?

A) All the codons are translated, causing a malfunctioning of the cell.
B) It increases methylation of the adenines, which stops transcription.
C) DNA polymerase is not able to properly attach to the promoter to start translation.
D) The repeats interfere with translation of normal mRNAs.
E) They cause a frame-shift mutation.