Although penguins might be dressed for a classy dinner date, the dapper birds probably wouldn't enjoy the cuisine. A recent study led by Jianzhi George Zhang at the University of Michigan in Ann Arbor found that penguins have lost three of their five different tastes.
While they can still distinguish between salty and sour foods, their tastes of sweet, bitter, and umami have disappeared due to a gene that makes a protein called Trpm5.
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