The Army and the Environmental Protection
Agency are decreasing the contamination at the
Army's Aberdeen Proving Grounds by
a. removing contaminated soil.
b. planting hybrid poplar trees.
c. chemically degrading the contaminants.
d. covering the contaminated soil with a
sealant.
e. doing none of these.
B
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The function of the DNA polymerase is to catalyze
A) the addition of deoxynucleotides. B) the formation of RNA primers. C) the addition of ribonucleotides. D) hydrogen bonding between complementary base pairs.
Scientists structure hypotheses in such a way that if they are wrong, they will be able to demonstrate it is wrong. This
is the principle of ____.
a. falsifiability b. the null hypothesis c. fallibility d. hierarchy e. errors
Which one of the following groups does not belong to the domain of the eukaryotes?
a. Fungi b. Protists c. Bacteria d. Animals e. Plants
In Drosophila, mutation screening usually involves use of a balancer chromosome that includes three elements: a set of overlapping inversions, an easily recognized dominant mutation, and a recessive lethal mutation that prevents balancer homozygotes
from surviving. Which one, or combination, of these elements is necessary and sufficient to suppress crossovers? A) inversions B) dominants C) lethal recessive D) inversions plus dominant E) lethal plus inversions