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This website explains what the PTC gene is and why some people taste bitter flavors. It explains what the PTC gene is useful for in nature and how natural selection works. It also stated that PTC gene carriers were less likely to be smokers. I choose this resource to go in to depth more about why some people are carriers of this gene and other people are not. It helps explain why it is important in nature, which I thought was cool. I would use this website as tool for myself after giving my students the paper to test for this trait. Then I would explain the benefits of having this gene.