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Science News for October 21, 2002


New screening method may speed hunt for disease-causing genes

Researchers have developed a new genetic screening method that narrows the pool of candidate genes from thousands to fewer than 100, potentially saving time and money. The technique uses a combination of quantitative trait locus mapping and microarray technology to identify genes with differential expression, which are more likely to b...

SourcePurdue University·JournalProceedings of the National Academy of Sciences·DateOct 21, 2002

New screening technique may speed hunt for genes

Scientists have developed a new genetic screening technique that narrows the pool of candidate genes from thousands to fewer than 100, potentially speeding up the search for genes responsible for inherited traits. The method combines two established techniques and has been tested on fruit flies, with promising results.

SourceUniversity of Florida·JournalProceedings of the National Academy of Sciences·DateOct 21, 2002

NSF grant for study of student underperformance

Williams College researcher Dr. Fein has received a $240,455 NSF grant to investigate the links between social context, physiological arousal, and cognitive appraisals in relation to student underperformance. The research team will include experts from education, neuroscience, health, cognitive psychology, and social psychology.

Energy density labels do not encourage overeating

A study published in the journal Appetite found that energy density labels do not lead to increased food intake among normal-weight women. The research suggests that people take the same portion sizes regardless of calorie content, making it easier for manufacturers and restaurants to create healthier products.

SourcePenn State·JournalAppetite·DateOct 21, 2002