Biologists Studying Navigation in Pigeons Discovered That That Their Experimental

question 49

Multiple Choice

Biologists studying navigation in pigeons discovered that that their experimental subjects were determining direction from the position of the sun by

• A) injecting the pigeons with testosterone.
• B) injecting the pigeons with estrogen.
• C) carrying out selection experiments with the pigeons.
• D) removing a portion of the pigeon's brains involved with navigation.
• E) disrupting the pigeons circadian clocks.

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