DNA profiling is done to
What will be an ideal response?
identify individual organisms by their genetic differences. These are detected by differences in the patterns of DNA fragments produced by digestion of DNA with restriction endonucleases and separation of fragments by gel electrophoresis.
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More rainfall enters the soil on steep slopes than on level land
Indicate whether the statement is true or false
Potential candidates for biological warfare
A) are generally gram-negative rather than gram-positive. B) can be virtually any pathogenic bacterium or virus. C) are eukaryotic rather than prokaryotic. D) must be genetically engineered to be effective.
Vibrio cholerae usually exists in a harmless form until
A. a bacteriophage introduces a gene that codes for the botulism toxin. B. the lytic cycle destroys the host cells. C. a bacteriophage introduces a gene that codes for the cholera toxin. D. mutations cause the normal proteins to form a toxin causing cholera.
Transgenic organisms are used to aid studies of:
a. genetic diseases. d. viral diseases. b. gene expression. e. genes involved in cancer development. c. immune system function