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

Biology & Microbiology

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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.

Biology & Microbiology

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.

Biology & Microbiology

Tandem duplication of a gene may be a result of

a. deletions. b. a recombination error. c. gene conversion. d. translocation. e. point mutation.

Biology & Microbiology

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

Biology & Microbiology