Tag: "preference" at biology news
Coke versus Pepsi: It's all in the head
for Coke versus Pepsi is not only a matter for the... knowing which drink they're tasting affects their preference
and activates memory-related brain regions that recall cultural influences. Thus, say the researcher...
OHSU study: Bacterial switching mechanism key to survival
...d xylose, they'll use glucose. They do have strong preference
for which sugars they want to consume." The survival technique, carbon catabolite repression (CCR), is one of the most fundamental and oldest mechanisms used for environmental sensing and signalling in bacteria, and it's critical for successful compe...
What women want makes a difference
...hey further show that genes responsible for female preference
are on the X and fourth chromosomes. The most promising genes in both regions appear to be involved with olfaction and on this basis, the authors propose a novel model of speciation via mating discrimination in Drosophila pseudoobscura based on th...
Are animals as irrational as humans?
...introducing the decoys resulted in an "irrational" preference
only when the decoys were allowed to have an effect on food intake, suggesting that the choice resulted from the birds' energetic state rather than from cognitive mechanisms of choice similar to those used to explain irrationality in human subjects. ...
Studies in Royal Society journals include stress in birds and depletion of medieval fish stocks
...niversity of Sheffield, SHEFFIELD, S10 2TP Female preference
for multiple condition-dependent components of a s...nct signals to evaluate males. We investigated the preference
of female field crickets for carrier frequency and chirp rate, two components of the calling song th...
Yerkes researchers discover baisis for determining handedness in chimpanzees
ATLANTA -- Hand preference
and language go hand-in-hand, or do they? Accordin...tor, "The dominant scientific view has linked hand preference
in humans with the area of the brain that controls language. After observing hand preference
Chimpanzee brains are asymmetrical in key areas and their handedness reflects it
...first-ever evidence of an association between hand preference
and asymmetries in three areas of the brain cortex in chimps. Observing 66 chimps, they correlated asymmetries in brain anatomy with three measures of handedness: Simple reaching (which hand chimps used to pick up a raisin thrown into the cage), tw...
Alcoholism and excessive food intake may share chemical pathways in the brain
...ht/12-hour dark day cycle until all had acquired a preference
for seven-percent alcohol over water in a two-bottle choice. "Rats are nocturnal animals and sleep during the light and feed and engage in other normal behaviors during the darkness," noted Lewis. The rats were then given three microinjections ga...
Experimental radar provides 3-D forest view
...relies on longer L- or P- band wavelengths upon in preference
to the shorter C-band wavelengths used by the radar satellites currently in orbit - these code letters being a legacy from radar's wartime origins. Envisat's C-band radar has a wavelength of 5.8 centimetres, which is too short to pierce through a de...
Selective predation and productivity jointly drive complex behavior in host-parasite systems
...roductivity. Surprisingly, when predators show no preference
for or even avoid parasitized hosts, interactions between the two enemies can drive both host and parasite unavoidably extinct. These findings stress the importance of the biological and ecosystem background in which hosts and parasites interact....
Cricket's finicky mating behavior boosts biodiversity
...reason, it's very important that she exercise this preference
in order to keep the species distinct." Mendelson spent three and one-half years studying the Laupala cricket with Kerry Shaw, an evolutionary biologist at the University of Maryland. The thumbnail-sized Laupala spawns new species at the rate of 4.17...
Children's taste sensitivity and food choices influenced by taste gene
...cted children's sweet preference, along with their preference
for sweet-tasting beverages and foods. Children w..., bitter receptor genotype did not influence sweet preference
in adults. Instead, effects of race/ethnicity were the strongest determinants. Mennella comments, ...
A startling diary reveals the onset of autism
... in socially responsive vocalization, and showed a preference
for family members over other people. By the age of one, however, the male twin showed less eye contact, less verbal communication, and less affection toward others than did his sister. His sleep patterns were also noticeably different from his siste...
Termites feed through good vibrations
... blocks and found that the termites switched their preference
to the large blocks. Prof Lai created an artificia... and the scientists found that the termites had no preference
for either large or small blocks. Broadcasting static into small blocks did not affect termite choic...
New findings in taste and smell research
... role in immune recognition, also influence mating preference
and other social behaviors in fish, rodents, and humans. These studies led to the notion that MHC molecules are a source of unique individual odors that somehow influence the recognition of individual conspecifics. Less clear, however, are the exact ...
Worth the wait? A neural mechanism related to impulsive decision-making
...ing impulsive decisions--in the pigeons' case, the preference
for a small, immediate reward over a large, delaye...ed to preferring the small but fast reward. Reward preference
in this task therefore depended on both reward amount and time-to-reward. Using single-cell electrop...
Migration study finds that sweeping management changes are needed to protect Atlantic bluefin tuna
... less of a problem for adolescent fish that show a preference
for the North American coastline, say the authors. However, bluefin weighing 300 pounds or more, which have a remarkable capacity to stay warm internally, have expanded their range into productive, subpolar seas throughout the North Atlantic, and thu...
Wild grasses and man-made wheats advance research capabilities
...g funded by the Texas Wheat ProducersBoard. "My preference
is to cross wheat with wheat," Rudd said. "The bestchance for success is to cross High Plains wheat with High Plains wheat.But to get genetic variability, you cross state lines or even into othercountries. The next step would be to cross species, if ...
Society of Nuclear Medicine to offer $10,000 William L. Ashburn, M.D., Pilot Research Grant for 2006
...he William L. Ashburn, M.D., Pilot Research Grant, preference
will be given to proposals in nuclear cardiology or physics/instrumentation work that leads to improving the imaging of radionuclide emissions. This grant may supplement, but not duplicate, other financial support. It will not pay institutional overh...
Certain fish have a special mating preference
... female selection on film. He examined the mating preference
of about 50 mosquitofish females, where each femal...ies of livebearing fish also exhibit female mating preference
for males with large genitalia. If true, he said, the evolution of this mating preference
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