Biology, 28.06.2021 23:30 cynthiauzoma367
Which statement about DNA replication is true?
A) Eukaryotes can only replicate one segment of chromosome at a time
B) Prokaryotes can only replicate their single circular chromosomes in the nucleus
C) Eukaryotes only have one circular chromosome that unwinds at multiple locations
D) Prokaryotes only have one origin of replication to initiate replication
Answers: 2
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Keeping in mind the life cycle of bacteriophages, consider the following problem: during the reproductive cycle of a temperate bacteriophage, the viral dna inserts into the bacterial chromosome where the resultant prophage behaves much like a trojan horse. it can remain quiescent, or it can become lytic and initiate a burst of progeny viruses. several operons maintain the prophage state by interacting with a repressor that keeps the lytic cycle in check. insults (ultraviolet light, for example) to the bacterial cell lead to a partial breakdown of the repressor, which in turn causes the production of enzymes involved in the lytic cycle. as stated in this simple form, would you consider this system of regulation to be operating under positive or negative control?
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Which statement about DNA replication is true?
A) Eukaryotes can only replicate one segment of chr...
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