Q. The rapid appearance of HIV-1 strains that are resistant to AIDS drugs is due in part to which of the following property of its reverse transcriptase?

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Q. The packing ratio of nucleosomes is about

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Q. After one replication in 15N, how many bands should be observed in a cesium chloride gradient?

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Q. Which of the following species lack a 'classical' histone H1?

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Q. Which of the following is correct?

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Q. The size of a linear DNA fragment in a gel can be estimated by

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Q. Which of the following are short nucleotides strands made by DNA polymerase working in the opposite direction of the replication fork?

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Q. Which of these drugs bind to DNA and cuts it, producing hydroxyl radicals?

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Q. Replication in E. coli is initiated by the generation of short RNA primers using

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Q. DNA replication results in

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Q. Which enzyme catalyzes the elongation of DNA molecules?

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Q. What is the IUPAC code for an A, C, T ambiguity in a nucleic acid sequence?

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Q. There is a single origin for DNA replication in bacteria. How many origins of replication are found in the much larger genomes of eukaryotes such as mammals?

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Q. The melting of 40-45 bp at the oriC site of E. coli requires

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Q. Overwinding or overtightening of DNA during replication is caused and removed by

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Q. How does ethidium bromide interact with DNA?

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Q. Number of times the two DNA strands are interwined in circular DNA and is known as

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Q. The enzyme responsible for breaking the hydrogen bonds, and thus separating the DNA strands during DNA synthesis is

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Q. Automated DNA sequencing uses the chain termination method

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Q. Okazaki fragments occur on the __________ and are bonded together by __________

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