If a positive reaction is last observed at a dilution of 1:256, the titer is
A. 128.
B. 1/512.
C. 1/256.
D. 256.
D
Biology & Microbiology
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The two major types of viruses are DNA and RNA viruses.
a. true b. false
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________ is the study of the evolutionary relationships among a group of organisms.
A. Systematics B. Clastistics C. Statistics D. Logistics
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