The discovery of the nature of the Philadelphia chromosome in myelogenous leukemia represents
A. a chromosome aberration that is secondary to the cancer.
B. an aberration that is caused by the development of cancer.
C. a translocation that is a chance event.
D. a specific chromosome aberration accompanying a specific cancer.
E. evidence of exposure to chemical carcinogens.
D
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tRNA is most like
a. a delivery truck b. a garbage truck c. a messenger d. a carpenter e. a physical therapist
What is one consequence of long-term exposure to carbon monoxide, found in environmental tobacco smoke?
A) damage to hemoglobin B) protection from bronchitis C) higher-than-average birth weights of babies born to smoking mothers D) diminished brain function in infants and children
The term for the use of microorganisms to restore damaged environments is
A) epidemiology. B) bioremediation. C) chemotherapy. D) serology. E) ecology.
"Bacterial transformation" is a bacterium's ability to:
A) produce restriction enzymes. B) connect DNA fragments once they are cut with restriction enzymes. C) produce proteins from another organism's genes. D) take up DNA from its surroundings.