Which of the following is true of the integration of a viral genome into the host chromosome?
A. Integration begins the process of host chromosome degradation.
B. The enzymes that are used in integration are nonspecific for the virus and its host.
C. Integration of the viral genome is a form of site-specific recombination.
D. All of the choices are correct.
Answer: C
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The yeast in the image below are budding into haploid cells. What molecule have they most likely begun to secrete?
a. luciferase
b. autoinducer
c. mating factor
d. tyrosine kinase
Ginkgo trees are known to lose their leaves at a certain time each year throughout the United States. Based on this information, Ginkgo trees in China must behave the same way. These statements are an example of:
A. inductive reasoning B. a theory C. an experiment D. deductive reasoning
The three nonsense codons that do not code for any amino acid; UAA, UAG, and UGA are also known as:
a) stop codons. b) start codons. c) transverse codons. d) secondary codons. e) degenerate codons
Fig. 16.15
The accompanying figure illustrates that after two half-lives, ____ percent of the parent radioisotope has decayed.
A. 100 B. 75 C. 50 D. 25 E. 0