Posts Tagged ‘Drosophila’
Jet lagged? Time to reset that inner clock
CORNELL (US) — A better understanding of how circadian rhythms work could lead to better treatments for jet lag and perhaps even more serious syndromes, a new study shows. Continue…
Monday, November 21, 2011 11:56 - 0 Comments
Science & Technology - Feb 17, 2011 11:33 - 4 Comments
Why waking up is hard to do
NORTHWESTERN (US) — If “five more minutes” is part of your normal morning routine, you can blame it on the absence of the “twenty-four” gene—one of the core genes of the circadian clock. (more…)
Science & Technology - Sep 27, 2010 15:40 - 6 Comments
Sexually precocious super flies decoded
UC IRVINE (US) — Researchers have deciphered how lowly fruit flies, bred to rapidly develop and reproduce, actually evolve over time. (more…)
Science & Technology - Jul 15, 2010 7:42 - 26 Comments
Evolution on the fly: Look, Ma! No genes!
U. ROCHESTER (US)—Researchers have identified a new mechanism for evolution that bypasses genes altogether. (more…)
Science & Technology - Jun 11, 2010 13:57 - 0 Comments
Clock gene knows when it’s time to eat, sleep
NYU (US)—Biologists have isolated genes that regulate the sleep-feeding conflict, paving the way to new insights into how the brain chooses between behaviors that are critical for survival. (more…)
Science & Technology - May 24, 2010 11:38 - 0 Comments
Genes regulate overeating in flies
CALTECH (US)—Biologists have identified two genes that appear to regulate meal sizes and frequency in fruit flies. Both genes have mammalian counterparts that seem to play a similar role in food intake. (more…)
Science & Technology - Mar 19, 2010 6:47 - 2 Comments
Glowing green sperm get around
SYRACUSE U. (US)—Fluorescent green sperm are shedding new light on exactly what happens during insemination and fertilization. (more…)
Science & Technology - Mar 10, 2010 18:15 - 0 Comments
How retina’s hardware processes color
NYU (US)—Biologists have identified, in greater detail, how the retina’s cellular hardware is used in color preference. The work enhances our understanding of how eyes and the brain process color. (more…)
Science & Technology - Feb 17, 2010 11:42 - 2 Comments
In-flight brain recordings from fruit flies
CALTECH (US)—The first recordings of brain-cell activity in a flying fruit fly suggest that at least part of its brain “is in a different and more sensitive state during flight than when the fly is quiescent,” says researcher Michael Dickinson. (more…)
Science & Technology - Feb 11, 2010 15:25 - 0 Comments
From fruit flies, timely clues about fighting flab
TEXAS A&M (US)—The tiny tongue of a fruit fly could provide big answers to questions about human eating habits, possibly even leading to new ways to treat obesity. (more…)
Science & Technology - Jan 14, 2010 16:28 - 0 Comments
Genomes of ‘smart bomb’ wasps sequenced
U. ROCHESTER—By sequencing the genomes of three wasp species that kill pest insects, a team of scientists is hopeful they will discover features that could be useful to pest control and medicine—that will enhance our understanding of genetics and evolution. (more…)
Science & Technology - Dec 18, 2009 11:07 - 0 Comments
What’s the new story on fruit flies?
A) This cross-section of an early Drosophila embryo shows the levels of the transcription factor Dorsal, which is present in a nuclear gradient. B) The predominant view in the field had been that different levels of Dorsal support the expression of distinct target genes along the dorsal-ventral axis of embryos. C) The Caltech team found that levels of nuclear Dorsal cannot account for the fact that the gene ind ceases to be expressed in dorsal regions of the embryo.
Science & Technology - Dec 7, 2009 14:11 - 0 Comments
Fly-off-the-handle pheromone—in flies
CALTECH (US)—Researchers have identified a pheromone in the vinegar fly that makes males behave aggressively, and they’ve pinpointed the neurons in the fly’s antenna that detect this pheromone and relay the information to the brain to elicit aggression. (more…)
Science & Technology - Nov 30, 2009 11:46 - 2 Comments
Emotional fruit flies offer clues to ADHD
CALTECH (US)—Researchers have uncovered evidence of a primitive emotion-like behavior in the fruit fly Drosophila melanogaster. The findings may be relevant to the relationship between the neurotransmitter dopamine and attention deficit hyperactivity disorder (ADHD). (more…)
Science & Technology - Oct 27, 2009 11:54 - 0 Comments
Different color, same genetics
U. MICHIGAN (US)—Despite having different color pigmentation, members of the same species have the same genetic makeup, a new study finds. (more…)
Science & Technology - Aug 28, 2009 16:59 - 0 Comments
Fruit flies killed by nanoparticles
Microscopy shows a clean foot and leg of a fruit fly (top), and a foot and leg covered with carbon nanostructures (bottom). Adhering nanostructures may have impeded movement, respiration and vision in adult flies but did not appear toxic to fly larvae that ingested it.
