Why scientists need anglers to scrape DNA from Lake Superior trout

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To rescue a troubled Lake Superior trout, Minnesota scientists need anglers — to scrape DNA off their catch. The effort is part of a new study to figure out if years-long efforts to save the fish — wild steelhead — have been helping, or harming. This video shows how to scrape the fish for its DNA. The results could pit two trout cousins — a popular, […]

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Why scientists need anglers to scrape DNA from Lake Superior trout

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