A bacteriophage transfers DNA of the previous host to the current host. This is an example of
A. conjugation.
B. specialized transduction.
C. generalized transduction.
D. creation of an Hfr cell.
Answer: C
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A common source of DNA for forensic testing is
A) the skin between the toes. B) cells scraped from inside the cheek. C) red blood cells. D) mucus.
Which of the following does not contribute to prokaryotic genetic variability?
a. mutation b. binary fission c. gene transfer by conjugation d. gene transfer by transduction e. gene transfer by transformation
A molecular clock is based on which of the following genetic conditions?
1.The stability of essential genes being highly conserved across species. 2.The common use of genes and proteins over very long time periods. 3.Accumulation of neutral mutations in a lineage. 4.Large biochemical changes within a species.
The most potent chemicals for activating pain receptors are
a. bradykinins. b. histamines. c. prostaglandins. d. cytokines. e. leukotrienes.