Exam 26: Dna Restructuring: Repair,recombination,rearrangement,amplification

Given the following DNA segments,show the intermediate structure that would be produced following isomerization during homologous recombination.

Which of the following coenzymes forms the photochemical reaction center of DNA photolyase?

How does RecA bring about strand exchange?

What is the correct order of enzyme activities required for nucleotide excision repair?

Which of the following is formed by oxidation of a DNA base?

The introduction of DNA into a bacterial cell by first packaging the DNA into a phage particle is referred to as _____________.

In antibody light chain production,combination of V and J regions occurs at the _____ level;combination of J and C regions occurs at the _____ level.

Which base or bases is/are methylated to identify the original template strand of replicated DNA?

Using the following DNA segment,show how microsatellite instability is present through a 2-base deletion as a result of loop creation within the A-C repeating sequence.Give the sequence after the first round of replication (with loop)and after the second round of replication. Template strand: 3'-C-A-C-A-C-A-C-A-C-A-5'

The repair of a double-strand break can be accomplished by ______________,which requires the Ku70/80 protein to _______________________.

Which of the following the represents the correct sequence of events for the Holiday model of homologous recombination?

What is a common trigger for the bacterial SOS response?

Which is a possible outcome when guanine is oxidized to 8-oxoguanine in the following segment of DNA?

Using the figure below,what is the first bond broken in the base excision repair process?

Which of the following types of DNA repair is often coupled with transcription?

What is the causative agent in the formation of a cyclobutane thymine dimer?

Show the common base pair seen between 8-oxoguanine and adenine.

One mechanism to introduce greater diversity into antibody sequences is somatic hypermutation.What enzyme is responsible for somatic hypermutation in the DNA sequences that code for antibodies?

In mismatch repair coupled to replication,which of the following relates a correct sequence of events?

A transposable element in a eukaryotic cell is called a _____________.