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Tag: "fly" at biology news

Brain region linked to fly slumber

... that sleep and learning are somehow linked in the fly brain. This lends weight to the notion that, in flies, sleep may function to consolidate memories that are formed during the day -- something that is known to occur in vertebrates. Sleeping flies are similar to sleeping humans. Both are groggy when ...

Loosen up, DNA: Leukemia gene changes genetic packaging

...ns. Turning to fruit flies lets Li and other fruit fly geneticists speed up cancer research by stripping down the complexity of the organism, discovering the major themes, and then using those as a guide when studying people directly. ...

Arctic expedition will investigate alien-like glacier

...for the glacier on June 21. From Ottawa, they will fly to Resolute, where they will be flown to the Eureka research station via Twin Otter airplane. The team will then reach the glacier by helicopter and set up a small camp near the base of the glacier where they will study the spring and acquire numerou...

Molecular DNA switch found to be the same for all life

... and Botchan and their collaborators studied fruit fly ORC using single-particle electron microscopy. Their images revealed for the first time how the ORC when bound to ATP forms a AAA+ helical structure much like the DnaA superhelix found by Berger and his team in their E.coli study. "This work prov...

FSU biologists uncover mechanisms that shape cells for better or worse

...cell's proper functioning. Their findings in fruit fly eggs may help to clarify how muscular dystrophy an...polarity in Drosophila oocytes (unfertilized fruit fly eggs) also are known players in the pathogenesis of those diseases. The research performed by FSU ...

UT Southwestern researchers find gene mutation that leads to 'broken hearts'

...rn Medical Center have identified a group of fruit fly gene mutations responsible for "broken hearts" in ...ause human heart defects. "We engineered a fruit fly so that the heart would glow in the dark and found a new type of malformation, completely unexpected...

Microscopic passengers to hitch ride on space shuttle

...xposure to the astronauts. A total of 12 GAPs will fly on the upcoming mission. "Spaceflight has been shown to induce key changes in both human and microbial cells that are directly relevant to infectious disease, including changes in immune system function, microbial growth rates, antibiotic resistan...

Study finds how organs monitor themselves during early development

...Ph.D., decoded the process in the developing fruit fly ovary that allows the ovary to monitor the number ...to eggs. Signals, sensors, feedback A fruit fly takes ten days to go from embryo to larva to pupa to flying insect. The researchers looked at a larv...

New fruit fly protein illuminates circadian response to light

...ely from one time zone to another. A mutant fruit fly that possesses jetlag-like behaviors enabled senio...he clock cells in the jetlag flies. When a fruit fly is exposed to light, a photoreceptor called cryptochrome (CRY) transduces the light signal and kicks...

A large step forward in the fight against African sleeping sickness

...the trypanosome parasite. The blood-sucking tsetse fly transmits the parasite from person to person. Once someone has been infected by the parasite, the person's body has great difficulty getting the infection under control, because the parasite constantly changes appearance. Thus, the trypanosome remain...

Fruit fly reveals a potential connection between dementia and cancer

...cycle proteins accompanied neuronal death in their fly model. Most importantly, loss of neurons could be prevented when the cell cycle was genetically blocked or when flies were fed anticancer drugs. Cell-cycle activation depended upon a hyperactive cell growth molecule, TOR (target of rapamycin), also k...

Resveratrol prolongs lifespan and delays onset of aging-related traits in a short-lived vertebrate

... such as yeast, the worm C. elegans, and the fruit fly Drosophila. However, until now, life-long pharmacological trials were performed in the worm or fly model organisms because of their very small size, very short natural lifespan, and affordable cultiv...

Tumor cells that border normal tissue are told to leave

...do this, the research team created tumors in fruit fly eyes and wings that permitted them to study the be...ole in metastasis." The cells that left the fruit fly tumors eventually succumbed to the natural process of programmed cell death and were eliminated. Acc...

Evolutionary shifts in olfactory sensitivities in fruit flies

...he? By comparing the olfactory system of the fruit fly Drosophila melanogaster, which feeds from multiple...hunned by, D. melanogaster and other sibling fruit fly species. In their new work, the researchers show that the main cue used by D. sechellia when locati...

New gene reduces retinal degeneration in fruit flies

... "Lazaro" that is expressed 15 times higher in the fly eye than the rest of the fly head. They found that this gene is required for a second biochemical pathway that controls the activ...

Study: Competition for sex is a 'jungle out there'

...f the same species, causing pollinators to have to fly long distances to deliver pollen. When pollinators do arrive, they may deliver lots of unusable pollen from other plant species. Knight and her colleagues found this pattern to be especially true for species that rely heavily on pollinators for rep...

Animals can change genes quickly to keep up with viral ingenuity

...ents evolve far faster than 97% of all other fruit fly genes. This rapid evolution illustrates the vital role of RNAi in antiviral defense, and it shows that these genes can be central players in the evolution of host organisms in response to the ever-changing strategies of viral attacks. ...

Honeybee decision-making ability rivals any department committee

When 10,000 honeybees fly the coop to hunt for a new home, usually a tree cavity, they have a unique method of deciding which site is right: With great efficiency they narrow down the options and minimize their bad decisions. Their technique, says Cornell University biologi...

How taste response is hard-wired into the brain

...deed, in studies with the easily manipulable fruit fly Drosophila, Kristin Scott and colleagues reported ...hers explored the behavioral effects of activating fly taste neurons that had either of two chemical taste receptors on their surface. In earlier studies, ...

Fruit fly's beating heart helps identify human heart disease genes

...sity research team has found that the common fruit fly can serve as a powerful new model for testing huma... team said, because the entire genome of the fruit fly is well understood and catalogued, enabling researchers to systemically screen genes to identify pot...

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