1.The nucleotide excision repair system is particularly important for removing d

ID: 263243 • Letter: 1

Question

1.The nucleotide excision repair system is particularly important for removing dimers of
Choose one or more:

A.adjacent thymines.

B.cytosines on opposite strands.

C.adjacent cytosines.

D.thymines on opposite strands.

A. the live cells were transformed with DNA from the dead virulent cells.

B. the dead virulent cells were resurrected once inside the living host.

C. the mice had subclinical infections of S. pneumoniae and became sick during the experiment.

D. the live harmless cells mutated into a virulent strain once in the mice.

E. the injected cell preparations were contaminated with live virulent S. pneumoniae.

A.become methylated before the subsequent round of replication.

B.remain unmethylated long enough for mismatches to be repaired.

C.remain methylated until checked by the Mut proteins.

D.contain methyl groups at nontarget sequences.

A. contains segments of dsRNA interspersed with DNA.

B. contains large segments of DNA from different sources and events.

C. is decorated with DNA-binding proteins.

D. undergoes crossover during meiosis.

E. has sites where double-stranded breaks are constantly being made and rejoined.

1.The nucleotide excision repair system is particularly important for removing d

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