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Contact: Katherine Unger Baillie
University of Pennsylvania

Bitter Taste Perception Test

Caption: Researchers from the University of Pennsylvania asked 296 Africans from a variety of groups -- here, a group of Yaaku people in Kenya -- to perform "taste tests" of progressively more concentrated solutions of salicin and report when they could detect a bitter taste. They matched the participants' genotypes onto their phenotypes, and found one genetic variant, prevalent in East African people, correlated with a high sensitivity to salicin's bitterness.

Credit: University of Pennsylvania

Usage Restrictions: In context of reporting on study.

Related news release: Penn team elucidates evolution of bitter taste sensitivity

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