Tag: "theory" at biology news

Dangerous Chemical Combination Presents Possible Scenario For Gulf War Illnesses

...uke and UT Southwestern scientists have developeda theory to explain why the chemical mix is dangerous. They...ecause they test the biological plausibilityof our theory that combinations of certain chemicals can cause symptomsthat are not caused by individual chemicals...

Key to Triplet Repeat Brain Diseases Open Door For New Way To Understand, Treat Genetic Diseases"

...peat size." The researchers point out that their theory of triplet repeat diseases wouldnot apply to those that contain stuttering sequences in the "junk"area of the genome, since those areas do not encode for protein production.The genetic disease called myotonic dystrophy is an example of such a disorde...

Dating A Caveman

...g from decaying U-238, U-234 and Th-230 atoms. The theory is good, but implementing it is difficult. The amounts of radiation produced are minimal, and even small measurement errors can lead to big errors in estimating age. To significantly reduce the measurement errors requires the use of a device known a...

Protein Glitch May Be Early Problem In Inherited Alzheimer's

...any steps there are in this cascade, but we have a theory about where the cascade is headed." According to Sisodia, mutated forms of presenilin may influence the formation of plaques in the brain that are among the earliest signs of Alzheimer's disease. Hopkins researchers currently are looking at mice in w...

Discovery Of Cell Sites May Shed Light On How Bodily Systems Interact

...atotrope cells, which make growth hormone.Previous theory held that they were on corticotrope cells, makers of stresshormones. The research, directed by Keith Kelley, a University of Illinois animalscientist and immunologist, led to a color snapshot of a direct link betweenthe body's immune and endocrine s...

Impact of Meteorites, Drop in Sea Level Caused Mass Extinctions 65 Million Years Ago

...researchers' evidence supporting the controversial theory that the extinction of dinosaurs and many other species was caused by the impact of a huge meteorite that crashed to Earth some 65 million years ago. "The end-Cretaceous extinction is one of the largest mass extinctions in Earth's history, a...

Siblicide In Nature: Study Of Galapagos Seabird Finds Death Can Ensure Species Survival

...is more complicated than most people think Darwins theory about reproduction in evolution is. The bottom line isnt how many babies you have now, but the total number of healthy offspring over the long term. "When you have more young in a brood than you can care for well, it may pay to pare off some young. ...

Researchers Find How Disease-resistant Plants Recognize Bacteria

...have struggled to determine if his "gene-for-gene" theory was correct and how it might work. In 1993, Martin was successful in cloning the first disease-resistance gene in crop plants, Pto , which is involved in gene-for-gene disease resistance. But Martin and his colleagues at Purdue struggled to understa...

New Finding Suggests "HATs" Are Key To Gene Activation Puzzle

...ongest evidence yet to support the widely accepted theory that gene activation is linkedto the uncoiling of the tightly wound form in which DNA is usually stored. "How genes are activated has confounded biologists for years," says C. David Allis, a professor of biology who madethe finding with post-doc...

Birds Deal With "Cocktail Party Effect"

...in music, having taken coursesin harmony and music theory as an undergraduate, and he is anamateur pianist. "It occurred to me that music was a perfect example ofsomething that happened in serial order," he said. "Since I wasworking with animals, I started looking around for a likelyanimal to begin stu...

Stronger Evidence That Global Climate Change Can Reduce The Variety Of Life

...t relative to thesun. The astronomical or orbital theory of climate holds that changes inthe seasonal and geographical distribution of the sun's energy reaching theupper atmosphere strongly influence Earth's climate over tens of thousandsof years. Today the Earth tilts at 23.5 degrees relative to its plane...

Summer Science: Firefly Babies Advertise Their Bitter Taste, UD Researchers Say

...ce Economics, Tallamy tested theaposematic display theory on ordinary house mice raised in a laboratory. Butfirst, the UD researchers needed to find out whether mice think firefly larvaetaste bad. In previous laboratory studies, vertebrate predators have consistently turned uptheir noses at lucibufagins, co...

MGH-Led Team Finds Gene For Crippling Neurologic Disorder

...only a single parent -- and disproved the previous theory that it was recessive and had to be inherited from both parents. One of the most immediate applications of this discovery will be theavailability of a simple, inexpensive blood test to confirm whether childrenwith dystonia symptoms have this disorde...

Pea Plant Stem Growth Gene Cloned

...ey were excited by the "new" findings and soon put theory into practice. From these humble beginnings, genetics and later molecular biology, evolved. "Mendel's experiments are now included in every high school biology class," said Davies....

Fossils Show British Columbia Was Once 2,000 Miles South

... For years scientists have been arguing about the theory of the wanderingWest, and whether it would have be...gin of rocks, says Ward,brings new excitement to a theory that gigantic blocks of rock "drifted that farthat quickly."...

Smoking Mice Lead To Emphysema Breakthrough

... new case of emphysema. But the prevailing theory had a shortcoming: lungs with emphysema don'thave many neutrophils. Instead, they are full of macrophages, immune-systemcells that eat bacteria and other intruders. Few thought macrophages played arole in emphysema because the cells seemed incapable ...

Geologist Finds Hidden Patterns Of Diversification In Ordovician Radiation

...for diversification in the Ordovician either. That theory used"ecological evolutionary units" to depict rapid or "knife-edge"changes in the major fauna worldwide. Miller argues that the"knife-edge" transitions did occur on a local level. They simplydidn't occur at the same time in localities worldwide. "The...

Stress Lowers Sperm Count By Overwhelming Cells That Make Testosterone

... as if oneman had gained the strength of ten. "My theory now is that this more powerful enzyme emerges when the Leydig cellsmature. It may be encoded by a gene closely related to the 11ßHSD gene expressedin younger Leydig cells," Hardy explains. Perhaps because it has severalhallmarks of the known 11&...

Colorado State Scientists Tackle Genetic Makeup Of Obscure Bacteria

...ery low," Cooper said. "Ourresearch focuses on the theory that at some point, there may be a cause andeffect between low T-cells, presence of the bacteria and the emergence of thedisease." Meanwhile, Inamine's research will look at the molecular and geneticdifferences between the two main types of M...

Strange South American Fossil Mammals Found In Madagascar And India

... fundamental implications for plate tectonics, the theory that landmasses move slowly over the face of the earth and were in different places in the past than they are today. Ironically, though the group of mammals was previously known only to be from Argentina, it was named Gondwanatheria after the su...

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Breaking Medicine News(10 mins):Health News:Coral Gables Florida Gets Ready to Be Lice-Free with Lice Troopers 2Health News:Federal Court Overseeing Thousands of Transvaginal Mesh Lawsuits Set to Convene Joint Status Conference for All Litigations, Bernstein Liebhard LLP Reports 2Health News:Federal Court Overseeing Thousands of Transvaginal Mesh Lawsuits Set to Convene Joint Status Conference for All Litigations, Bernstein Liebhard LLP Reports 3Health News:Federal Court Overseeing Thousands of Transvaginal Mesh Lawsuits Set to Convene Joint Status Conference for All Litigations, Bernstein Liebhard LLP Reports 4Health News:Every Year Four Million Emergency Department Visits Result from Accidents Involving Bone Trauma 2Health News:Every Year Four Million Emergency Department Visits Result from Accidents Involving Bone Trauma 3Health News:Every Year Four Million Emergency Department Visits Result from Accidents Involving Bone Trauma 4Health News:Global Epigenetics Market Was Valued at $413.24 Million in 2014 - New Research Report by MarketsandMarkets 2Health News:Global Epigenetics Market Was Valued at $413.24 Million in 2014 - New Research Report by MarketsandMarkets 3
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