Tag: "why" at biology news
Gene variant increases risk for alcoholism following childhood abuse
... Health (NIH). The new finding could help explain why
some individuals are more resilient to profound childhood trauma than others. With this study we see yet again that nature and nurture often work together, not independently, to influence our overall health and well-being, says NIH Director Elias A...
Cord blood may preserve insulin levels in children with type 1 diabetes
...e quietening the immune system attack, and this is why
the work in Gainesville is so important....
How fish punish 'queue jumpers'
..., ourselves included. These help us to understand why
we do the things we do. ...
Gut check: Tracking the ecosystem within us
...d flowed. "We don't have a good explanation for why
one big group of bacteria would replace another. And it's not that the number of bacteria dropped," Palmer explained. "The size of the population was relatively stable." Over time, however, the composition of the intestinal microbial communities c...
Which came first: Primates' ability to see colorful food or see colorful sex?
... in primates through sexual selection and explains why
current foraging performance does not always correlate with the ability to discriminate red. Trichromacy in primates evolved in a context other than socio-sexual communication, and this context may have been foraging performance. However, once trichr...
Ancient retrovirus sheds light on modern pandemic
...ng out how humans have become who we are today and why
we are or are not susceptible to modern viruses th...," said co-author Malik, "if we want to understand why
our defenses are the way they are, the answers inevitably lie in these ancient viruses more so than ...
Revealed -- Mosquito genes that could be controlling the spread of killer viruses
...r which of these genetic differences could explain why
one type of mosquito transmits dengue and yellow fevers, while the other transmits malaria. Beyond the present descriptive work, functional studies will be needed to clarify exactly how this happens. This study made us realise that the immune ...
Researchers isolate new risk marker for overweight children
... risk, even though researchers struggle to explain why
40 to 50 per cent of people who suffer cardiac episodes have "normal" LDL levels. Proctor and his colleagues, including U of A obesity researcher Dr. Geoff Ball, believe that apoB48, which is found exclusively in a type of cholesterol produced in ...
Mathematics reveals genetic pattern of tumor growth
...mor growth. The discovery shows for the first time why
this change occurs, providing insight into how can...ques, but the UCI research is the first to explain why
the pattern leads to tumor growth. The occurrence of genetic instability is often debated by cancer ...
CU study reveals why starling females cheat
...red by other males," said Rubenstein. No one knows why
superb starling females have lower rates of cheati...y and this species, "we can break down the reasons why
superb starling females are not faithful to their mates and see that they have different extra-pair ...
Link between obesity and enlarged heart discovered by University of Arizona researchers
...rsity of Arizona Sarver Heart Center helps explain why
excessive body weight increases the risk for heart disease. In the largest study of its kind, cardiologist M. Reza Movahed, MD, PhD, and research specialist Adolfo A. Martinez, MD, discovered that excessive body weight is associated with a thicken...
NJIT professor says certain home shapes and roofs hold up best in hurricane
... on a roof tend to be uplift forces. This explains why
roofs are often blown off during an extreme wind event. Connecting roofs to walls matters. Stapled roofs were banned following Hurricane Andrew in Florida in 1993. Strong connections between the structure and its foundation and connections betwee...
How 'memory' T cells curb the spread of viruses throughout the body
...ted) from recurrence of the same disease. This is why
before vaccines were developed, childhood diseases such as measles and mumps occurred only once in a lifetime. The immunity occurs when the immune system produces cells called lymphocytes that specifically attack and eliminate the virus at the time ...
Burning fat and carbohydrate during exercise
...ody exercise. They also help scientists understand why
athletes "hit the wall" during events like the marathon, and they have implications for the adaptations made in middle-aged adults who are using exercise to prevent or treat conditions like diabetes and obesity. If the mechanisms can be fully underst...
Changes in chromosomal constitution of preimplantation embryos suggest caution in genetic screening
...implantation, she says. Our results can explain why
PGS would not be able to increase pregnancy potential but rather can serve as a prognostic tool in a limited number of cases, says Ms Frumkin. It can also help us make optimal decisions about the value of switching to a different assisted reproductio...
Endosome-mediated signaling in plants
...s of endosomes and hopefully help us to understand why
cells use them as signaling compartments," noted lead author of the paper, Dr. Niko Geldner. Endosomes were once thought to function solely in the inactivation of receptors and the down-regulation of cell signaling. Work in animal cells over the pa...
Recycling is not enough -- we need to consume less
...ir relative effectiveness or by helping understand why
they did or did not work. Professor Ken Peattie, Director of the ESRC Centre for Business Relationships, Accountability, Sustainability and Society (BRASS), Cardiff University, describes three projects which are linked to different aspects of waste...
Fruit bats are not 'blind as a bat'
...the darkest parts of large trees. That may explain why
these genera have somewhat smaller eyes, lower cone densities, and no colour vision. "In our outdoor enclosures, flying foxes roost openly during daytime, whereas the other genera retreat to darkened sleeping cubicles", relates Dana LeBlanc of the Lu...
Research finds that circadian rhythms dominate all life functions
...te, and now we are getting closer to understanding why
exactly," said Ptitsyn, a researcher in the Bioinf...e others," said Ptitsyn. That is one likely reason why
researchers previously missed the impact of circadian rhythm on all genes. Depending upon environmen...
In nature, proteins sweep up nanoparticles
...pt away by underground currents. Precisely how and why
the bacteria undertake this bit of housecleaning r...les out of solution into a ball. Scientists dont why
this occurs. Perhaps its a serendipitous accident. Proteins and peptides could be released by bacter...
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