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How The Nose Knows: Research On Smell Boosted

Date:
May 24, 1999
Source:
Louisiana State University
Summary:
In the ancient oceans of early earth, three billion years ago, a single-celled creature dropped organic chemicals as it went about its daily business. Unnoticed by the tiny animal, its lost chemicals left a trail that was sensed by a predator. The predator stalked, attacked and ingested its hapless prey -- and the faculty of smell began its long evolutionary development. The sense of smell, notes LSU biology professor John Caprio, originally evolved to detect water-soluble chemicals like amino acids. The ability to detect volatiles in air is an adaptation of the original mechanism.

In the ancient oceans of early earth, three billion years ago, a single-celled creature dropped organic chemicals as it went about its daily business. Unnoticed by the tiny animal, its lost chemicals left a trail that was sensed by a predator. The predator stalked, attacked and ingested its hapless prey -- and the faculty of smell began its long evolutionary development.


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The above story is based on materials provided by Louisiana State University. Note: Materials may be edited for content and length.


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Louisiana State University. "How The Nose Knows: Research On Smell Boosted." ScienceDaily. ScienceDaily, 24 May 1999. <www.sciencedaily.com/releases/1999/05/990524040220.htm>.
Louisiana State University. (1999, May 24). How The Nose Knows: Research On Smell Boosted. ScienceDaily. Retrieved April 17, 2014 from www.sciencedaily.com/releases/1999/05/990524040220.htm
Louisiana State University. "How The Nose Knows: Research On Smell Boosted." ScienceDaily. www.sciencedaily.com/releases/1999/05/990524040220.htm (accessed April 17, 2014).

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