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Biologists have genetically mapped the sex chromosomes of several species of cichlid fish from Lake Malawi, East Africa, and identified a mechanism by which new sex chromosomes may evolve. In research published in this week's issue of the journal Science, biologists Thomas Kocher, Reade Roberts and Jennifer Ser of the University of Maryland describe the genetic basis for two co-existing systems of sexual determination in cichlid fish from Lake Malawi.
Science 'Boot Camp' for Undergrads
Students from several universities spent two weeks in August getting intensive instruction and hands-on lab experience on projects well outside their areas of expertise
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Researchers conclude that the ongoing conversion of graddlands to corn for ethanol production is posing a very real threat to the wildlife whos habitat is being transformed
In Amoeba World, Cheating Doesn't Pay
Researchers are peeling back the layers of strategy that determine how colonies of social amoebas resist the efforts of cheaters to alter the balance of power
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