New species evolve from pre-existing species by the accumulation of
A. metabolic events.
B. genetic mutations.
C. proteomes.
D. reproductive events.
E. developmental events.
B. genetic mutations.
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At the deepest depths many animals find prey by relying on
a. tactile senses. b. chemical stimuli. c. large eyes. d. both a and b e. both b and c
Four of the five choices listed below are lobes of the
cerebrum. Select the exception. a. parietal b. squamosal c. frontal d. occipital e. temporal
AIDS is caused by the retrovirus HIV, which makes DNA complementary to the viral RNA using
a. RNA polymerase b. beta-galactosidase c. RNA synthase d. ATPase e. reverse transcriptase
In the Hershey and Chase experiment, how did labeling DNA and protein with different radioactive isotopes demonstrate that DNA, rather than protein, carried the genetic information in the T2 virus?
A. Researchers could better elucidate DNA or protein structure. B. Researchers could use radio labeling to inactivate DNA and protein in the bacteria. C. Researchers could track which part of the virus entered a bacterial cell. D. Researchers could monitor how DNA interacted with protein in the virus. E. Researchers could distinguish bacterial DNA from viral protein.