Dissociation elements (Ds) in plants are examples of
A) activator transposons that can direct their own transposition.
B) nonautonomous elements that require activation by an autonomous element.
C) mutator genes that increase the spontaneous mutation frequencies of other genes.
D) repeated sequences that are targeted by a transposase.
E) Both B and C
Correct Answer:
Verified
Q11: Which of the following is not mutagenic?
A)5BU
B)AZT
C)Nitrous
Q12: What is conservative transposition?
A)No net increase in
Q13: Thymine dimers are commonly caused by
A)ultraviolet radiation.
B)ionizing
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
Q17: Which of the following nucleotide changes leads
Q18: Mutation frequency is the
A)number of mutations per
Q19: The codon 5'-AAA-3' codes for the amino
Q20: What kind of mutation-detection procedure can be
Q21: How can PCR be used to induce
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