DNA Structure and Replication
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?

none of these
One
Thousands and tens of thousands
About 100

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DNA Structure and Replication
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?

It has low affinity for the correct dNTP's
The RNase H domain of p66 causes error prone synthesis
AZT (zidovudine) is too expensive to be taken in effective doses
It lacks a proofreading exonuclease

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