Life Sciences

Male Sex Chromosome Losing Genes by Rapid Evolution, Study Reveals
A wallaby is a marsupial. Credit: Anton Nekrutenko, Penn State
Active Genes Discovered in the Developing Mammal Brain
Samples of mouse RNA are being prepared for analysis by Xinwei Han, a Penn State graduate student in biology and an author of the research paper. Credit: Christina Manbeck, Penn State
Secrets Revealed About How Disease-Causing DNA Mutations Occur
This chart shows the type of data used in a multi-scale wavelet analysis. Both lines indicate the frequency of recognition sites for the enzyme topoisomerase.
Melissa Rolls Honored as Pew Scholar in the Biomedical Sciences
Melissa Rolls to Receive the 2011 Junior Career Recognition Award from the American Society for Cell Biology
New "Timetree of Life" Initiative Illuminates the Antiquity of Life on Earth
Cover of "The Timetree of Life" book by S. Blair Hedges and Sudhir Kumar.
Hydrothermal Vent Expedition is Educational Experience for Scientists and Middle-School Students
Certain mussels and anemones can live near hydrothermal vents. Credit: Charles Fisher, Penn State
Mobile DNA Elements in Woolly Mammoth Genome Give New Clues to Mammalian Evolution
Drawing of a woolly mammoth
Probing Question: Can a Pandemic be Predicted?
Winners of Plant-Biology Video Contest Announced by ChloroFilms
Scientists Determine the Structure of Highly Efficient Light-Harvesting Molecules in Green Bacteria
The image shows a hot spring in Yellowstone National Park Montana, a site where bacteria containing chlorosomes can be found in the brightly colored mats. Credit: Donald Bryant, Penn State
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