Observing replication of circular plasmid DNAs by electron microscopy showed that:
A. replication initiates at multiple origins, creating multiple replication bubbles in the plasmid.
B. template strands completely unwind before replication starts.
C. replication initiates from a single origin, creating a single replication bubble in the plasmid.
D. the plasmid DNA must become linear before replication can initiate at each end of the linear plasmid.
E. replication occurred only at one replication fork of the bubble created.
C
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Which of the following would be considered a transgenic organism?
A. a bacterium that has received genes via conjugation B. a human given a corrected human bloodclotting gene C. a fern grown in cell culture from a single fern root cell D. a rat with rabbit hemoglobin genes E. a human treated with insulin produced by E. coli bacteria
All of the following structures are found within the nucleus of a eukaryotic cell except
A) speckles. B) Cajal bodies. C) promyeloctic leukemia (PML) bodies. D) nucleolus. E) All of the above are found in the nucleus
Innovations and new technology systems create new opportunities for initial advantage and cumulative causation in peripheral regions
Indicate whether this statement is true or false.
An explanation for a biological process that is substantiated by a large body of evidence is called a ______.
A. hypothesis B. theory C. systems biology D. reductionism E. prediction