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?

One
About 100
Thousands and tens of thousands
none of these

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DNA Structure and Replication
Taylor, Woods and Hughes labeled Vicia DNA by allowing new DNA synthesis in the presence of radioactive thymine. After DNA replication (S phase of the cell cycle), it was observed that

both (a) and (b)
only one chromatid of a chromosome was labeled
both chromatids of a chromosome were labeled
neither chromatid was labeled

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