What makes cells tick detailed by Dartmouth researchers
...es the extent to which you can generalize." Strong similarities suggest "broad applicability."...Researchers decipher fundamental signal for maleness
...trol element in a fruit fly gene, indicating broad similarities of this new male signal. "This structure extends known sex-specific signals, such as from estrogen or testosterone. The presence of similar genes in diverse kinds of animals suggests its primordial origins as a male signal," said Michael Weiss, the...Microscopic bone evidence supports dinosaur-bird evolution link
... of Washington and a Japanese colleague have found similarities in bone structure suggesting that birds did, in fact, evolve from a group of dinosaurs. The research will be published in the Aug. 10 issue of the journal Nature. The study shows that in a group of dinosaurs called coelurosaurs, the organization of b...New evidence indicates huge vegetation loss accompanied mass extinction
...he Karoo Basin, and the researchers found striking similarities in the evidence for a rapid shift from meandering to braided streams. Major tectonic activity could change streams from meandering to braided, Ward said. However, recent studies have shown there was no major tectonic activity at the time of the Per...Stanford researchers win National Science Foundation grants for information technology research
...ods to quantitatively compare data sets and detect similarities and differences between them, which is very difficult to do with previous methods," Hesselink says.......n-Volhard also raises the possibility that further similarities may exist between fruitfly and vertebrate eyes. Since a lot of information is available on the development of fruitfly eyes, this promises to help our understanding of vertebrate eye development....Common mode of action likely in gene-activation molecules linked to cancers
...al. "We couldn't have anticipated the structural similarities among these molecules from their genetic sequences," says Shelley L. Berger, Ph.D., a co-author on the study and an associate professor at The Wistar Institute. "We needed the structural comparisons to come to the conclusions we came to." Scientist...Researchers expand dating of marine animals to brachiopods
...ilar to those derived previously for mollusks. The similarities included the fact that, while most shells are younger than a few hundred years, the accumulations included shells from a period of thousands of years. The researchers also determined that the shell's taphonomy, or the degree to which it appears to be...Researchers sequence first plant genome
...nd roundworms. By uncovering the genetic basis for similarities and differences between organisms, such work may shed light on evolution. For example, certain Arabidopsis genes appear to have moved to new locations within the genome. Further study may show how such genetic reshuffling has occurred in other organ...New UCLA study suggests that avoiding high-fat foods may help protect bones from osteoporosis
...becomes part of a growing body of research linking similarities between heart disease and osteoporosis. And the common link so far seems to be high cholesterol. The structures of bone and artery are very similar. Osteoporosis and heart disease may both be caused by an inflammatory response in the body, trigge...Ovarian stimulation in mice adversely affects embryo development and implantation
...rom animal models to humans. However, considerable similarities exist among many mammalian species in the early stages of development which suggests that information obtained from laboratory animals at the time around the implantation of the fetus might also be applicable to humans."...JAK-STAT signaling keeps leukemia cells alive
...onal expansion of a T-cell population sharing many similarities with antigen-activated cytotoxic T lymphocytes (CTLs). Unlike normal CTLs, which are readily targeted for destruction by Fas ligand (FasL) binding to the Fas receptor, leukemic LGLs resist Fas-mediated apoptosis. Here, Epling-Burnette and co-workers ...Scholar finds parallels between U.S./Japanese attitudes toward wolves
...y correlations between Montana and Japan, too. The similarities should help Montanans see that Japan is more than simply a distant exotic land with a difficult language. "Our mutual fear and admiration of these animals bring us together as people," he insisted. "If there's a message," Walker added, "I think it...A first: A (nearly) complete road map for the evolution of placental mammals
...ogical method" in that it makes decisions based on similarities and differences. But the molecular methods data are DNA and protein sequences. The morphological and molecular methods have sometimes yielded different results, leading to a longstanding, often acrimonious debate among scientists about which one is m...Darwinian evolution of reproductive proteins in mammals
...researchers used statistical methods to search for similarities and differences among reported ZP2, ZP3 and OGP sequences in a variety of mammalian species, including cats, dogs, rats, mice, marmosets, macaques and humans. They compared the number of DNA changes seen between species that cause protein sequence di...Ancient tick found in New Jersey leaves experts guessing
... Carios jerseyi shows similarities to a group of ticks known for feasting on birds. And a small feather (7.5 mm, or 0.3 inches) from an unidentified bird was also found preserved in the same outcrop of amber. "...A worm is more like a human than previously thought
...n that humans did not have many more genes. The similarities between the number and identity of genes in humans and worms allow researchers to extrapolate from worms to humans in their genetic research. He explained that the "gene knockout" technique that is used to learn about how single genes work can take a...Scientists find new supressor gene involved in breast, prostate and other cancers
...the gene does. "ST7 has no relatives or structural similarities to any other known gene," Zenklusen says. But the scientists have shown that the gene has been highly conserved over evolution, since it is widely found in lower organisms. That generally means the gene plays an important function in the body. Pre...Researcher finds that important fungal "scaffolding" genes belong to one of four classes
...ous fungi, however, said Momany. Still, numerous similarities between septins allowed Momany and other members of her laboratory, Jiong Zhao, Rebecca Lindsey and Patrick Westfall, to find four classes orthologous fungal septins. While other classes may be discovered, this information allows researchers a new fr......f food they ate, and so on," he says, but regional similarities between fossils may simply come from similar adaptations to local conditions. Disotell's genetic analysis reveals that looks can be very deceptive. "I've found monkeys that looked nearly identical that were completely unrelated. Then I found other mo...