Quantcast

Latest Drosophila melanogaster Stories

2011-12-15 13:14:16

• This transformation, which is common in embryonic development, is very similar to the process undergone by metastatic tumor cells. • The gene GATA 6 is sufficient and necessary for this change to happen. This gene is associated with many tumors of endodermal origin, such as those of the liver, pancreas and colon. Researchers at the Institute for Research in Biomedicine (IRB Barcelona) have identified the gene GATA 6 as responsible for epithelial cells -which group together...

Image 1 - Waiter! There's A Fly In My Beer!
2011-11-18 04:34:10

UC Riverside entomologists explain why flies are attracted to beer and products of yeast fermentation Ever wondered why flies are attracted to beer? Entomologists at the University of California, Riverside have, and offer an explanation. They report that flies sense glycerol, a sweet-tasting compound that yeasts make during fermentation. "Insects use their taste system to glean important information about the quality and nutritive value of food sources," said Anupama Dahanukar, an...

2011-11-09 10:07:09

A team of New York University biologists has uncovered a previously unknown role for a set of cells within the female reproductive tract of fruit flies that affects the functioning of sperm and hence fertility. Their discovery, which is published November 8 in the online, open-access journal PloS Biology, adds to our understanding of how insects reproduce and may provide a means to manipulate reproductive behavior in other insects. The researchers studied spermathecal secretory cells...

Image 1 - Fruit Fly Intestine May Hold Secret To The Fountain Of Youth
2011-11-03 04:46:41

Long-lived fruit flies offer Salk scientists clues to slowing human aging and fighting disease One of the few reliable ways to extend an organism's lifespan, be it a fruit fly or a mouse, is to restrict calorie intake. Now, a new study in fruit flies is helping to explain why such minimal diets are linked to longevity and offering clues to the effects of aging on stem cell behavior. Scientists at the Salk Institute for Biological Studies and their collaborators found that tweaking a...

2011-09-01 16:44:56

Although several genes have been linked to amyotrophic lateral sclerosis (ALS), it is still unknown how they cause this progressive neurodegenerative disease.In a new study, Columbia University Medical Center (CUMC) researchers have demonstrated that two ALS-associated genes work in tandem to support the long-term survival of motor neurons. The findings were published in the September 1 online edition of the Journal of Clinical Investigation. "Any therapy based on this discovery is...

2011-06-30 17:51:57

The natural world contains great diversity in the shape and size of organisms.  But how does this variety evolve?  The group of David Stern at Princeton University is investigating changes in morphology in fruit flies and has managed to show how a gene enhancer (a piece of DNA that controls the timing and level of a gene's expression) can change its function through stepwise changes in DNA sequence to give rise to differences in animals' appearance.  Alistair McGregor of the...

2011-04-27 14:00:41

The fruit fly Drosophila melanogaster used to be found only in sub-Saharan Africa but about 10,000 years ago it began to colonize Asia and Europe.  This period saw the start of human agriculture and the domestication of cats and oxen but we have no evidence to suggest that early agricultural practices were associated with significant global warming, so the fly's northerly spread is thought to relate to genetic factors rather than to environmental changes.  An intriguing clue to the...

2011-02-16 17:13:05

Scientists identify a gene important for the daily rhythms of the sleep-wake cycle Northwestern University scientists have discovered a new mechanism in the core gears of the circadian clock. They found the loss of a certain gene, dubbed "twenty-four," messes up the rhythm of the common fruit fly's sleep-wake cycle, making it harder for the flies to awaken. The circadian clock drives, among other things, when an organism wakes up and when it sleeps. While the Northwestern study was done using...

2011-01-12 18:26:13

Research published in the journal GENETICS suggests that being around the opposite sex activates genes in Drosophila melanogaster that cause them to perform certain courtship behaviors Scientists from Texas have made an important step toward understanding human mating behavior by showing that certain genes become activated in fruit flies when they interact with the opposite sex. This research, published in the January 2011 issue of the journal GENETICS (http://www.genetics.org), shows that...


Word of the Day
attercop
  • A spider.
  • Figuratively, a peevish, testy, ill-natured person.
'Attercop' comes from the Old English 'atorcoppe,' where 'atter' means 'poison, venom' and‎ 'cop' means 'spider.' 'Coppa' is a derivative of 'cop,' top, summit, round head, or 'copp,' cup, vessel, which refers to 'the supposed venomous properties of spiders,' says the OED. 'Copp' is still found in the word 'cobweb.'
Related