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Do you prefer coffee or tea? The answer to that question might in part be down to your genes, research suggests. 你喜欢咖啡还是茶？根据现在的研究显示，这个问题的答案可能取决于你的基因。 Scientists say a genetic predisposition to perceiving the bitterness of particular substances appears to nudge us towards one beverage or the other. 科学家们说：有一个基因上的差异关系到我们如何感知特定物质苦味，它似乎决定了我们更喜欢哪种饮料。 Dr Marilyn Cornelis, co-author of the research from Northwestern University in Illinois, said: “The study adds to our understanding of factors determining beverage preferences – taste, in particular – and why, holding all other factors constant, we still see marked between-person differences in beverage preference as well as the amount we consume.” 这项研究来自美国伊利诺伊州的西北大学，其中的联合作者Marilyn Cornelis博士说：“这项研究让我们对饮料偏好的理解又深了一步，尤其是在口味方面，它同时还解释了为什么会有这样的差异；在所有其他变量控制不变的前提下，我们依然发现饮料偏好和饮用量在人与人之间有明显的差异。” The study, published in the Scientific Reports journal, involved two sets of data. The first was a large twin study which showed that, at least in those of European ancestry, particular genetic variants are linked to the strength of perception of different tastes: | 
