Download Mutations Quiz

Mutations Quiz
1. True or False: A mutation is a change in the DNA sequence. The change
is always harmful.
false 2. True or False: Deletions occur when a segment of DNA is repeated.
false 3. Why can frameshift mutations be especially dangerous?
Frameshift mutations upset the reading frame. This will change the amino acid sequence of the protein, resulting in an incorrect protein, which can be especially dangerous. 4. Explain the phase, “Beneficial mutations lead to evolution.”
Sometimes a mutation will allow an organism to be better adapted to its environment. These mutations lead to evolution. 5. What is a mutagen?
A mutagen is any chemical that causes a change in the sequence of DNA. 6. What type of mutation occurs when a segment of DNA is flipped and
then reattached to the same chromosome?
a) deletion
b) inversion
c) insertion
d) translocation
7. What type of mutation is the following:
CAGGTTGCAAG to CAGTTGCAAG
a) deletion
b) frameshift mutation
c) point mutation
d) all of the above
8. Which best describes a translocation?
a) A segment of DNA moves from chromosome 8 to chromosome 2.
b) A segment of DNA from chromosome 8 is lost.
c) A segment of DNA from chromosome 2 is repeated.
d) A segment of DNA from chromosome 8 is swapped with a segment from
chromosome 2.
9. What type of mutation is the following:
AGTTACCAGGC to AGTTTACCAGGC a) deletion
b) inversion
c) insertion
d) translocation
10. Why are chromosomal mutations dangerous?
a) Chromosomal mutations are going to be fairly large, possible affecting many
genes.
b) Chromosomal mutations always result in deletions.
c) Chromosomal mutations are always frameshift mutations.
d) all of the above