Tag: "errors" at biology news
Stakeholders improve global change assessment
...explanations are needed. They correctedinadvertent errors
and suggested references and new areas of investigation. "When the committee had questions, we knew we needed to do a better jobto make the report understandable," says Anderson....
Emory University Scientists Demonstrate New Pathway For Genetic Mutations In Everyday Cell Life
...ess, where damaged and unrepaired DNAcan result in errors
when DNA is copied before cells divide. Dr. Doetsch and his colleagues concentrated on non-dividing cells, whichgo through a process called transcription in order to manufacture proteins. During transcription, the cell first makes an RNA cop...
Disease Mechanism In Hereditary Dementia Discovered: Treatment Implications Seen For Alzheimer's And Other Neurodegenerative Diseases
...tions on the plaques. Recentdiscoveries of genetic errors
in hereditary FTDP-17, however, opened the doorfor the current study, and the results re-emphasize that the disease-causingcapability of mutant tau must not be underestimated. "There's no doubt that tau tangles alone can lead to disease, whil...
Rare Brain Mapping Procedure Provides Unique Picture Of Two Areas Concerned With
Language Processing and Production
...inal gyrus created repeated but different kinds of errors
in S.T.'sability to name objects. When Broca's are...igns resembled thetarget sign. Corina likens these errors
to "mumbling" made in spoken languages.The subject made no effort to self-correct these lax or imper...
Williams Syndrome: UD Research Pinpoints Language And Learning Traits Of Those With The Disorder
...Thesubjects with Williams Syndrome "made many more errors
than controls,particularly on complex problems composed of multi-part blocks," Landau reports.Eye recordings "suggest that at least part of their spatial deficit is due totheir allocation of attention to single blocks, rather than to configurations."...
Birds Of A Feather: The Physics Of Flocks
...n the next step of thesimulation, these 2.5 degree errors
get transmitted and shared by neighboringbirds in the same way. The question is: Would these errors
undermine theability of flocks to stay organized and move in a single direction? Vicsek again looked...
Whitehead Study Supports Existence Of Ancient RNA World, Helps Provide Insight Into Early Evolution Of Life
...t selects for the fittest molecules and introduces errors
in successivegenerations of copies much like in real evolution) to gather further evidence infavor of the RNA world view. They have shown that complex ribozymes are morecommon than previously thought and can be quite efficient. In addition, twoyear...
Aspirin Decreases Genetic Mutations Associated With Inherited Colon Cancer
...t hMSH2 or hMLH1the cellular DNA becomes unstable, errors
accumulate and the result is cancer,"Dr. Fishel explains. Now the question is, will it work in humans?" says Dr. Fishel. "Wealready know there is some efficacy in humans. We didn't know why--this work atleast partially answers that question....
UB Fertility Researchers Find They Can Predict Pregnancy By Assessing Two Sperm Abnormalities
...hile in the no-pregnancy group, the rates for both errors
were significantly higher. Based on these da...d to a pregnancy. So couples with either of these errors
have greatly reduced pregnancy potential. "Fifteen years ago, we knew so little about the human...
UCSF Researchers Identify Mutations In Gene Causing Hereditary Form Of Childhood Rickets
...e activity. Ultimately,they hope to link specific errors
in the enzyme to specific clinicalmanifestations in individual patients. "People have different degrees of severity and times of onset of thecondition," said Miller. "It may be that we will be able to find a correlationbetween the specific m...
New RNA Repair May Lead To More Successful Gene Therapy
... Like sending imperfect plans to a factory, errors
in messenger RNAproduction result in defective or ...nsevere cases of untreated beta thalassemia, those errors
lead to acute anemiaand death at a young age. "The advantage of our novel way to block the i...
Microsurgery Made More Accurate With Virtual Measuring Tool
...ocedures. It is important to note that the small errors
observed here may have resulted from inherent limitations in the human operator's ability to perform the alignment task, since this task relies solely on retinal disparity cues for aligning the virtual pointer to real object features. Other powerful ...
Good Ergonomics Is Good Economics
...Texas, determined that the problem was in frequent errors
in the packing line. The packers had no idea what they were doing because they had inappropriate documentation to work with. Dan conducted a task analysis and then used it to develop a highly pictorial "Texas-sized" storyboard that detailed the speci...
New Molecular Switch Is The Key That Unlocks DNA Repair
...ular DNA becomes unstable [genome instability], errors
accumulate and the result is cancer, Dr. Fishel explained. In their experiments, the scientists measured the initial binding of hMSH2-hMSH6 to a mismatch of the nucleotides G (guanine) and T (thymine) in the DNA. Normally, G (...
Testosterone And Working Memory; Epilepsy And Schizophrenia; Toxins And Neuron Death; Oregon Researchers Present Findings At Society For Neuroscience
...d significant improvement in performance and fewer errors
than men testedafter one month on a placebo. Janowsky says the study indicates that sex hormonesupplementation in men may mitigate the loss of working memory associated withaging. Estrogen and testosterone levels were not related to working memory in...
Scientists Discover How Genes Work Together To Control Neural Development
...signaltransduction pathway." "Cancer can result if errors
occur inthe signal-transduction pathway, giving a cell the signal to divide insteadof the signal to become a neuron," Carthew explains. "These signal-transductionpathways are indispensible for life because they are critical for neuraldevelopment, but...
Dating A Caveman
...n 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...
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