A female bowerbird being unable to recognize
the mating ritual of a male toucan is an
example of what type of isolating mechanism?
a. genetic
b. ecological
c. behavioral
d. mechanical
e. temporal
C
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Glucose and fructose both have the chemical formula (C6H12O6) so they are considered
A) isotopes. B) polymers. C) monomers. D) isomers. E) isogenic.
A model is used by ecologists to
A) prove how nature works by demonstrating cause-and-effect relationships. B) analyze data that have been collected during an experiment. C) make predictions about how nature works using a set of explicit assumptions. D) observe how nature works in an experimental setting.
Tandem duplication of a gene may be a result of
a. deletions. b. a recombination error. c. gene conversion. d. translocation. e. point mutation.
Which of the following lymphoid organs has the immunological function of filtering pathogens from the blood?
A. tonsils B. thymus C. spleen D. lymph nodes E. galt