This is Scientific American's 60 Second Science. I'm Steve Mirsky. Got a minute?
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“And I am not going to eat any more broccoli.”
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New search points to a single gene is the reason the first president Bush would not allow broccoli’s aggression to stand.
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According to a report in the latest issue of Current Biology, a receptor molecule involved in tasting broccoli and gene relative comes in various forms. Some of us have the form of the receptor gene, the allele that makes the vegetables really unpalatable. But why? Would these vegetables also include chemical compounds called glucosinase that can interfere with thyroid function. The paper notes that a billion people are still at risk of thyroid insufficiency and that creates strong evolutionary selection pressure for the ability to detect the glucosinase and minimize their intake. The paper ends by saying this study demonstrates the importance of the individual human taste genes or alleles for the perception of food and illustrates the perception of even a single allele of a bitter taste receptor gene may greatly impact. How a so population perceives an entire family of vegetables.
# ]2 `: A' ?0 F* I- a0 ^( CThanks for the minute for Scientific American's 60 Second Science. I'm Steve Mirsky.
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听力碰上专业词汇 从来没听过,咋办
# i+ ^/ Z1 | W2 o觉得自己听力太弱,很多词还是不能快速反应,要听好几遍
