Polyploidy is a common mechanism of sympatric speciation in
a. mammals in general.
b. birds in general.
c. rodents.
d. plants.
e. waterfowl.
D
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The guppy behavior studies presented in your text, including the transfer experiments of guppies between high predation and low predation sites illustrates:
a. rapidity with which natural selection can operate. b. significant differences in behavior have evolved in populations separated by only 10,000 years. c. significant differences in behavior have evolved in populations due to predation stress. d. All of the above. e. None of the above.
Many soil fungi take part in a mutualistic relationship with plant roots, known as _____
a. mycelium b. mycorrhiza c. mycotoxin d. lichen e. hypha
Which animals exhibit insight learning?
a. all vertebrates b. a few vertebrates, including primates c. only primates d. only humans e. all vertebrates, and a few invertebrates
All of the following are characteristics of viruses except
A. they can cause mild diseases. B. they can cause fatal diseases. C. they can be crystallized. D. they often have a geometric capsid. E. they have a viscous fluid inside their capsids.