The mutation responsible for Huntington's disease is a

A. triplet repeat expansion mutation.
B. nonsense mutation.
C. missense mutation.
D. frameshift mutation.


Answer: A

Biology & Microbiology

You might also like to view...

The process of song learning by white-crowned sparrows is similar to the process of territory-holding by African

cichlid fishes because brain cells in both animals can change ____ in response to well-defined social stimuli.

a. only their biochemistry b. only their structure c. only their function d. only their structure and function e. their biochemistry, structure, and function

Biology & Microbiology

Males with one copy of an X-linked gene are said to be ________ for that gene.

A) homozygous B) heteroallelic C) heterozygous D) hemizygous E) deficient

Biology & Microbiology

In peas, the round allele is dominant over the wrinkled allele. A plant with round peas was crossed to a plant with wrinkled peas and all of the resulting plants had round peas. What is the genotype of the parents in this cross?

A) RR × rr B) RR × Rr C) Rr × rr D) Rr × Rr E) rr × rr

Biology & Microbiology

What is the relative biological fitness of an individual who is heterozygous for sickle-cell disease who lives in central Illinois vs. an individual who is heterozygous and lives in South Africa?

What will be an ideal response?

Biology & Microbiology