Thymine dimers are commonly caused by
A) ultraviolet radiation.
B) ionizing radiation such as X-rays.
C) tautomers.
D) alkylating agents.
E) intercalating agents.
Correct Answer:
Verified
Q8: Base analogs may cause mutations because
A)they modify
Q9: Spontaneous mutation rates are greatly reduced by
A)exposure
Q10: A transposon is
A)a DNA segment that can
Q11: Which of the following is not mutagenic?
A)5BU
B)AZT
C)Nitrous
Q12: What is conservative transposition?
A)No net increase in
Q14: The deamination of cytosine creates
A)5-methyl cytosine.
B)uracil.
C)2-aminopurine.
D)5-bromouracil.
E)thymine.
Q15: An IS (insertion sequence)element contains
A)a transposase gene
Q16: Dissociation elements (Ds)in plants are examples of
A)activator
Q17: Which of the following nucleotide changes leads
Q18: Mutation frequency is the
A)number of mutations per
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