The ________ was proposed to help explain speciation that appears in the fossil record.
A. phylogenetic species concept
B. morphological species concept
C. genetic divergence species concept
D. evolutionary species concept
Answer: D
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The phenotypic changes shown in the figure above represent
A. punctuated equilibrium.
B. horizontal gene transfer.
C. gradualism.
D. speciation based on sexual selection.
If you administered an acetylcholine-destroying drug directly into the brain of a rat, this might lead to mimicking symptoms of
A. epilepsy. B. insomnia. C. Parkinson's disease. D. Huntington's disease. E. Alzheimer's disease.
Based on the temperature range and precipitation, which area in the accompanying figure is dominated by pine trees?
a. 3 b. 4 c. 5 d. 6 e. 7
Salvarsan was a drug to treat syphilis developed by
a) Ehrlich. b) Fleming. c) Weizmann. d) Needham.