Chromosome 17 - A strange sense of smell

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Do you trust your sense of smell? We usually consider our senses to be relatively reliable and would expect a certain substance to smell the same to different people. Thanks to small genetic variations in a gene called OR7D4 on chromosome 17, however, something which smells like flowers to one person might smell like stale sweat or urine to someone else. As Aoife McLysaght from Trinity College Dublin explains, this is yet another example of how tiny changes in our DNA can alter the way we look or perceive the world.

With thanks to BBSRC: http://bbsrc.ac.uk/

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Видео Chromosome 17 - A strange sense of smell канала The Royal Institution