Birds use specific songs, coloring, and mating dances to attract mates of their species. This is an example of _____ reproductive isolation.

A. postzygotic
B. allopatric
C. prezygotic
D. sympatric
E. outgroup


C. prezygotic

Biology & Microbiology

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True or False: The fossil record reveals there are relatively few animal body plans maintained throughout Earth's history

A. true B. false

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Which trait exemplifies the chaparral regions of California? a. Plants are adapted to occasional fires

b. Lie between deserts and tropical rainforests. c. Plants evolved water conserving mechanisms. d. Receives 25 - 100 centimeters of rainfall per year. e. None of these choices.

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Why are transgenic animals engineered as models of human disease, rather than studying the disease in humans? What will be an ideal response?

Biology & Microbiology

In humans, the thirst center is located in the ____.

A. adrenal cortex B. hypothalamus C. anterior pituitary D. pons E. thymus

Biology & Microbiology