One gene provides fruit fly both antenna and color vision

<img src="/news/PublishingImages/4048_t.jpg" alt="Pretty fly — for a fruit fly. The areas stained blue are regions in the fruit fly where the spineless gene is expressed.” height=”211″ width=”150″ />Pretty fly – for a fruit fly. The areas stained blue are regions in the fruit fly where the spineless gene is expressed.A team of researchers that includes biologists from Washington University in St. Louis has discovered that a gene involved in the development and function of the fruit fly antenna also gives the organism its color vision. Claude Desplan, Ph.D., professor of biology at New York University, and his students made the discovery and provided the data. Ian Duncan, Washington University professor of biology, and his wife, research assistant Dianne Duncan, provided the Desplan laboratory fruit fly (Drosophila) clones and mutants and technical assistance that helped locate where the gene, called spineless, is expressed in the retina. More…

Chaos = Order: WUSTL physicists make baffling discovery

“Da police are not here to create disorder; dere here to preserve disorder.” — Richard J. Daley, Chicago mayor, explaining to the media the role of the police during the riotous 1968 Democratic National Convention. David Kilper/WUSTL PhotoThe order team.Police keep order. That’s why, for example, they issue tickets for “disturbing the peace.” Thus the only logical conclusion to Mayor Daley’s famous quote above — other than dismissing it as the result of a tangled tongue — is sometimes disorder spawns order. Sounds impossible, right? Wrong. According to a computational study conducted by a group of physicists at Washington University in St. Louis, one may create order by introducing disorder. More…

Advance hastens practicality of superconductivity

Nobody completely understands superconductors. So fathom how James S. Schilling, Ph.D., led a team that makes the phenomenon work better. Schilling, a professor of physics in Arts & Sciences at Washington University in St. Louis, collaborated with recent doctoral graduate Takahiro Tomita and scientists at Argonne (Ill.) National Laboratory to determine whether one region in superconductors, called grain boundaries (GB), are oxygen deficient. Such oxygen deficiency impairs superconductor performance. The group developed a technique that estimates how much oxygen is present in a critical region of superconductors called grain boundaries. More…

Two other Mars missions heating up

The Mars Reconnaissance Orbiter (above) is poised to go into orbit around Mars in March, then spend about six months aerobraking to place the spacecraft in a low circular orbit by this fall.Two Mars orbiter missions — one from NASA, the other from the European Space Agency (ESA) — will open new vistas in the exploration of Mars through the use of sophisticated ground-penetrating radars, providing international researchers with the first direct clues about the Red Planet’s subsurface structure. Roger Phillips, Ph.D., Washington University in St. Louis Professor of Earth and Planetary Sciences in Arts & Sciences, is participating in both the Mars Express (ESA) and NASA’s Mars Reconnaissance Orbiter (MRO) missions by lending his expertise in radar. Phillips says that the combination of the radars on the two missions will provide important and unique data sets that will directly map the structure of the upper portions of the interior of Mars. More…

Researchers find ways heat-loving microbes release energy

Jan Amend sampling shallow marine vent fluids in 2005 at Ambitle Island, Papua, New Guinea.Curiosity about the microbial world drove Jan Amend, Ph.D., associate professor of earth and planetary sciences in Arts & Sciences at Washington University in St. Louis, to Vulcano Island, Italy, a shallow hydrothermal Shangri-la near Sicily. There, Amend and his collaborators managed to examine the environment in depth, design a gene probe, and discover new life-which could have some big implications for the origin and presence of life on Earth. More…
View More Stories