Tag: "comparing" at biology news

Head lice reveal contact between modern and ancient humans

...ory of the head/body louse Pediculus humanus , by comparing the appearance and genes of this and related species of lice. They confirmed previous results that P. humanus comprises two evolutionary lineages-one contains both head and body forms and has a worldwide distribution; the other contains only the he...

Bovine genome assembled

... sometime in the first half of 2005. They are also comparing the bovine genome sequence with those of the human and other organisms that have already been sequenced. Results of these analyses will begin to be published in the public databases in the next several months. The bovine genome is similar in size to...

Bovine genome sequence available

...d preventing disease. Researchers are currently comparing the draft version of the bovine genome sequence with those of the human and other organisms that have already been sequenced. The results of these analyses will be published on public databases in the next several months. Sequencing and assembly...

INEEL uses extremophile bacteria to ease bleaching's environmental cost

... lose half its effectiveness -- as a yardstick for comparing two enzymes. Large-scale production of the T. brockianus enzyme could end decades of environmental costs from industrial bleaching. Chlorine, used for more than a century, forms toxic and carcinogenic chemicals called dioxins as byproducts. Industrie...

Pushing the envelope to overcome HIV drug resistance

...uctural theme in protease inhibitor resistance. By comparing the structures of several substrate-protease complexes, they establish a "substrate envelope" to define the three-dimensional shape that is shared by all the substrates as they are bound in the active site. They then go on to define an "inhibitor env...

New center to map DNA of key lab mice

...ourage development of rapid cell-based methods for comparing the effects of environmental exposures. By the third year, the Center will begin translating research findings to population analysis and to toxicology testing. These studies will also influence the development of curative treatment and regulatory d...

Yerkes researchers to present array of new data at Society for Neuroscience Meeting

...r systems that promote cell growth and survival by comparing gene activity in the brains of humans, chimpanzees and rhesus macaques. This finding may explain how evolution reinforced the protective systems human cells possess to minimize damage caused by metabolism, thereby allowing humans to live longer than ...

Are museum collections of ancient life representative?

...erms of cost and time," Barbour Wood said. So I am comparing my bulk collections, time period by time period." Martinsville is near her home and the university and has extensive collections representative in terms of diversity and abundance compared to the mollusks preserved as fossils in nature from these ti...

High-predator environment has unexpected impact on aging in fish

...eriments. Now, a study by UC Riverside researchers comparing fish living in high- and low-predator environments.... The researchers evaluated aging in these fish by comparing their life spans, mortality rates, fertility, and their swimming performance. Some of their results ...

Sex-determining genes of infectious fungus resemble human Y chromosome

...-determining region of the C. neoformans genome by comparing it to that region in the related pathogenic fungal species, Cryptococcus grubii and Cryptococcus gattii. The sex-determining genome region appears to have acquired genes in four main steps -- beginning with the acquisition of genes into two sep...

MIDI, Inc receives Official Methods(SM) status for the confirmatory ID of the anthrax pathogen

...ial cell membrane. The bacteria are identified by comparing their fatty acid "fingerprint" to databases of known fatty acid patterns. The system includes several bacterial databases, including The MIDI BIOTER TM database (version 2), which was exclusively used in the study. The MIDI Sherlock System can ide...

Automated scans let scientists track drugs' broad effects on cells

...y concentrations of a drug, which is essential for comparing two drugs that may have different potency but act on the same target." Since they are hardy and flourish even outside the body, the Harvard team used human cancer cells. They placed the cells in 384 minuscule wells in a plastic dish, injected ea...

Sex versus survival: A tradeoff at geographical range limits

...enormous, genetically homogeneous superclones." By comparing reproduction in natural populations versus a benign greenhouse environment, the research team learned that the reproductive switch is due to genetic factors causing sexual sterility. These sterility mutations can spread in northern populations becaus...

Delays in cutting greenhouse gasses could harm environment

... strategies for reducing greenhouse gas emissions, comparing plans that begin reductions right away and others that delay action and make a more intensive effort later. Even if they ultimately reach the same target level of greenhouse gasses, the plans would have dramatically different environmental consequenc...

New protein identified in development of lung cancer

...pression in human and mouse lung tumor samples and comparing it with Pirh2 expression in normal tissue from the same samples. They found that Pirh2 expression was higher in 27 of 32 (84 percent) of human lung cancers and in 14 of 15 (93 percent) of mouse tumors than it was in the normal tissue. "This is the f...

Muscle loss from space travel, prolonged inactivity linked to two genes

...the bcl3 gene, so-called knockout mice, and then comparing knockout results with those from control groups as well as those from genetically unaltered ("wild-type") mice, Kandarian was able to isolate the effects either gene had on triggering atrophy in each of two weight-bearing muscles in the mouse hind li...

No getting around RET

...opy of the transgene) were healthy and fertile. On comparing specific embryonic regions in hetero- and homozygous mice, they found associations between RET-expressing and RET-independent GFR1 cells in kidney, enteric and motor neurons, as well as the expected disturbances in development. However, when they nex...

Researchers reconstruct parts of the genome of a common mammalian ancestor

...hat is now Asia more than 80 million years ago. By comparing DNA sequences of 19 species of existing mammals, including humans, the researchers have reconstructed a large segment of DNA in the species from which all of today's placental mammals arose. They estimate that the reconstruction is 98 percent accurat...

Computer analysis shows scientists could reconstruct the genome of the mammalian common ancestor

...mics--the effort to understand the human genome by comparing it with the genomes of other species. By comparing the human genome to the ancestral genome, scientists may learn much more than they can from comparis...

Tracking orangutans from the sky

...orangutan numbers can be made from helicopters. By comparing ground survey data, collected over two years, with aerial counts garnered in only 72 hours the authors calibrated and refined their aerial survey results and were able to directly assess the distribution and size of orangutan populations throughout t...

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(Date:7/31/2014)... the National Science Foundation (NSF), counters a widely-held ... warming, indicating instead that certain Arctic lakes store ... atmosphere. , The study, published this week ... thermokarst lakes, which occur as permafrost thaws and ... water, converting what was previously frozen land into ...
(Date:7/31/2014)... that biomass burning burning forests to create ... slash-and-burn agriculture and wildfires figures into both ... the release of a new study by Stanford ... Jacobson, the degree of that contribution had never ... a paper published July 30 in the ...
(Date:7/31/2014)... hidden hazard lurks beneath many of the roughly ... The hazard is corrosion in parts of underground ... leaks and contamination of groundwater, a source of ... nine states have reported many rapidly corroding gas ... incidents are generally associated with use of gasoline-ethanol ...
Breaking Biology News(10 mins):Certain Arctic lakes store more greenhouse gases than they release 2Stanford professor finds that wildfires and other burns play bigger role in climate change 2Stanford professor finds that wildfires and other burns play bigger role in climate change 3Stanford professor finds that wildfires and other burns play bigger role in climate change 4NIST corrosion lab tests suggest need for underground gas tank retrofits 2
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