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Genetic Mutations II
Test Description: Second test of your genetic mutation knowledge.
Instructions: Answer all questions to get your test result.
1) A frameshift mutation
A
replaces one amino acid with another.
B
removes part of the protein.
C
joins two different proteins.
D
introduces a section of amino acids not normally found.
2) Which of the following is not an effect of a mutation?
A
changes the shape of a protein
B
prevents a protein from forming
C
lowers the amount of a protein
D
adds a function to a protein
3) A point mutation that changes a codon specifying an amino acid into a stop codon is called a
A
frameshift
B
missense
C
nonsense
D
deletion
4) Changing the codon AGC to AGA represents a ____ mutation.
A
deletion
B
nonsense
C
missense
D
frameshift
5) True of False: Most mutations have no effect on the organism.
A
True
B
False
6) A mutagen is
A
only not found to occur naturally
B
a protein that repairs genetic mutations
C
something that can cause a genetic mutation
D
an organism with mutations in its genome
7) A female that is planning to become pregnant is concerned about exposure to environmental mutagens. In order for these mutations to become heritable, they must affect her
A
body cells
B
blood cells
C
somatic cells
D
egg cells
8) Which of the following would indicate a base pairing mutation in DNA?
A
A paried with T
B
G paired with C
C
U paired with A
D
G paired with T
9) Mutations can occur during
A
transcription of mRNA
B
DNA replication
C
translation of a protein
D
all of the above
10) Which of these factors is associated with mutagenic effects
A
water vapor
B
oxygen gas
C
carbon monoxide gas
D
cigarette smoke
*select an answer for all questions
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