Knockout mice with no active copies of the Dvl-1 gene ____
a. were apparently abnormal physically
b. displayed normal social behavior
c. were not easily startled
d. were apparently normal physically and but not socially
e. were apparently normal physically, but displayed abnormal social behavior and were
easily startled
E
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Structural genes code for
A. ribosomal RNA molecules. B. transfer RNA molecules. C. gene expression elements. D. cellular proteins. E. All of these choices are correct.
Which factor influences radioactive decay?
a. time b. temperature c. pressure d. moisture e. chemical bonding
Some people are unable to properly metabolize the drug Purinethol, which is given to patients with acute
lymphoblastic leukemia; therefore, such patients must be first tested for the associated genetic variant to determine proper dosage of the drug. This scenario best illustrates the use of _____. a. pharmacogenomics b. map-based sequencing c. positional cloning d. annotation of DNA sequences e. comparative genomics
In the presence of both lactose and glucose, which of the following occurs with the E. coli lac operon?
A. The lacI gene does not produce repressor. B. The lacZ and lacY genes are fully expressed. C. The cAMP-CAP complex is not available to bind near or at the lac promoter. D. Lactose is converted to glucose and galactose. E. Lactose binds to the operator.