Question

Huntington's disease occurs when a CAG repeat expansion in the coding region of the HTT gene becomes too long. The CAG repeat is also in frame.

(... | CAG | CAG | CAG | ...)
Which amino acid is coded for in this repeat?

a) proline
b) glutamic acid
c) glutamine
d) asparagine

Answer 1

The CAG repeat expansion in the HTT gene codes for the amino acid glutamine.

Step-by-step explanation:

The CAG repeat expansion in the coding region of the HTT gene codes for the amino acid glutamine.