DNA Structure and Replication
One hypothesis of DNA replication suggested that the parental DNA molecules are broken into fragments. Both strands of DNA in each of the daughter molecules are made up of an assortment of parental and new DNA. This statement refers to which hypothesis?

Evolutionary theory
Dispersive theory
Conservative theory
Semi-conservative theory

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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
It lacks a proofreading exonuclease
The RNase H domain of p66 causes error prone synthesis
AZT (zidovudine) is too expensive to be taken in effective doses

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DNA Structure and Replication
Nucleosome is

an octamer of four histones with H1 protein
an hexamer of three histones without H1 protein
an octamer of four histones without H1 protein
an hexamer of three histones with H1 protein

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