The repair of a stalled replication fork may be initiated because its structure resembles
a. a Holliday junction.
b. a pyrimidine dimer.
c. a transcription bubble.
d. a base-pair mismatch.
e. viral DNA.
Ans: a
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How many years did it take for the world population to reach approximately one billion?
a. 10 million b. 2.5 million c. 100 million d. 300 million e. 1.5 million
Explain how the discovery of cytoskeletal elements in prokaryotes contributed to the current understanding of the endosymbiont theory
What will be an ideal response?
The prolonged low temperature exposure required for the germination of some seeds:a
is typical of coconuts. b. provides an alternative to the process of imbibition. c. prevents them from growing in flooded, anaerobic soils.
d. allows the seeds to conserve limited food stores. e. ensures that the seeds germinate in spring, rather than in fall.