Under which circumstances does the zenk gene become active in zebra finches, and what is its effect?
What will be an ideal response?
ANSWER: Transcription of the zenk gene is stimulated when the zebra finch hears its species' song. Zenk
produces an enzyme that changes the structure and function of neurons. The outcome is an
auditory sensitization to slight variations in the song.
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The disease whose symptoms are most closely related to the symptoms of chronic syphilis is
A) Rocky Mountain spotted fever. B) latent Lyme disease. C) typhus. D) HPS.
Bats and moths are attracted to __________ flowers
a. blue b. purple c. red d. white
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