Purine bases have a structure.
A. single ring
B. single triangle
C. double triangle
D. triple ring
E. double ring
E. double ring
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Recombination occurs during meiotic
A) anaphase B) interphase C) prophase D) metaphase
Staphlococcus aureus is a bacterium that
causes wound infections. Many strains of S. aureus now exist that have evolved resistance to the potent antibiotic, methicillin. This is an example of ____ selection.
a. directional b. stabilizing c. disruptive d. frequent e. more than one of these types of
Why is it difficult for small isolated populations of animals to thrive?
a. There would be less genetic diversity. b. They would have difficulty finding a mate. c. They are vulnerable to disease. d. all of these
Which is not true of medical errors?
A) They are the third leading cause of death in the United States. B) They can be the result of an incorrect lab test. C) They are always the fault of the physician. D) They can be the result of faulty equipment.