Tag: "origins" at biology news
Genetic differences might help distinguish thyroid cancers
... should also help scientists better understand the origins
of the two diseases. The study is published in the a recent issue of the Journal of Clinical Oncology. "This finding suggests a potentially very useful diagnostic aid in those rare instances where the pathologist cannot distinguish between FTC and...
New sequence involved in DNA replication timing may aid in cancer detection
...f the cell cycle, is initiated at many replication origins
in the DNA molecule. These replication origins
fire at specific times throughout S phase, causing each segment of the genome to replicate at a prec...
Mitochondrial genes cause nuclear mischief
...nd irrevocably come to a halt. Testifying to their origins
as once free-living bacteria, mitochondria have their own DNA, comprising 37 genes in humans on a single circular chromosome. However, most of the mitochondria's presumed ancestral genes have been taken into the cell's nucleus, where they are under t...
Highlights of American Chemical Society national meeting in Philadelphia, Aug. 22-26
...y bioterrorism , new findings about the chemical origins
of life and the ongoing debate over organic vs. conventionally grown foods . Selected topics are described below. Sunday, Aug. 22 Gene for strawberry flavor identified -- Researchers in Germany have identified, for the first time, the gene that...
Discovery of new shrimp species adds to unique family
...ted from description can help biologists trace the origins
of living things as well as determine the biodiversity, or richness in variety, in an area. Description is "the basis of all biological, phylogenetic and evolutionary study," Anker said. After description "we can make a lot of hypotheses and assump...
Meteorites supplied Earth life with phosphorus
.... "This allows us to somewhat constrain where the origins
of life may have occurred," he said. "If you are going to have phosphate-based life, it likely would have had to occur near a freshwater region where a meteorite had recently fallen. We can go so far, maybe, as to say it was an iron meteorite. Iron m...
Researchers review evolutionary history of modern algae
... roles of modern phytoplankton, their evolutionary origins
and rise to prominence in today's oceans was an un...ther from different fields. Despite the early origins
of cyanobacteria, an essential component of modern phytoplankton, the ancestors of the majority of p...
Songbirds escaped from Australasia, conquered rest of world
... the Corvida. That means all songbirds trace their origins
to Australasia and New Guinea." The Passerida differ from the Corvida because the Passerida somehow made it out of Australasia and New Guinea and onto the Asian mainland long before the Corvida, Barker said. Asia and Australasia are carried on sep...
Research to Prevent Blindness awards $4.8 million
...ill help advance our understanding of the cellular origins
of age-related macular degeneration. Among RPB's vision scientists fighting eye diseases are nine active Jules and Doris Stein RPB Professors who receive $375,000 each over five years and up to $100,000 in a matching grant for laboratory constr...
Sleepless over Seattle: Migrating songbirds forgo sleep but keep their wits
...robable journey. But it may also shed light on the origins
of sleep-related seasonal disorders and the much-debated role of sleep itself....
Growth study of wild chimpanzees challenges assumptions about early humans
... been used as a baseline for discussion of hominid origins
and the transition from ape ancestors to hominids. The eruption of teeth mark other life events, such as completion of brain growth (90 to 95 percent of brain growth is complete when the first permanent molar erupts) and life-history stages like inf...
Asian bird flu became highly pathogenic through continued circulation and gene swapping
...tbreak in Hong Kong in 1997. The report traces the origins
of the outbreaks of highly pathogenic H5N1 disease in Asian poultry that occurred in 2003 and 2004. The researchers collected samples of the virus from poultry in Indonesia, Thailand and Vietnam, and from humans in Thailand and Vietnam. They then co...
Experiment station researcher looking for missing links in corn
...re selecting and breeding materials from different origins
to develop a value-added corn with a desirable combination of traits."...
Birds show superior listening skills
...erstand absolute pitch may get to the heart of the origins
of musical perception," Sturdy added. "Once we can determine the extent of the differences in absolute pitch perception, then we can begin to understand why these differences exist and why our mammalian brains work the way they do."...
The first domesticated donkey was born in Africa
...gazine the results of their investigation into the origins
of the domesticated donkey. The authors have disco...species, which corroborates two different maternal origins
for domesticated donkeys from two different wild populations. To locate the specific area of the fir...
Study sheds new light on genetic risk for Parkinson's disease
...ith these paradoxes to help us unravel the complex origins
of Parkinson's disease and perhaps find a way to prevent it." ...
Origin of West Indian insect eater much older than previously thought
..., Riverside, is part of a team that has traced the origins
of the shrew-like Caribbean creatures, known as so...ives inhabit the Western Antilles, can trace their origins
to the era of the dinosaurs, according to the Nature paper. Scientists still are unclear how the cre...
Many scientists believe the dog genome holds information that will benefit human health
...an ancient group of animals with Asian and African origins
that possess a wide diversity of traits. This group includes breeds such as the Alaskan Malamute and Siberian Husky and shows the closest relationship to the wolf, the direct ancestor of the domestic dog. "This group may be telling us something about...
First genetic comparison of purebred domestic dogs produces surprises
... insights may enable even deeper insights into the origins
of inherited diseases to which those breeds are susceptible, said the researchers....
Stem cells toward sperm cells and back again
...ized cells can naturally revert to their stem cell origins
at times -- think regrowth of salamanders' lost li...steps -- but not more -- away from their stem cell origins
can revert to the more primitive state. Understanding how and until what point specialized cells ca...
1 2 3 4 5 6 7 8 9 10