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Tag: "spots" at biology news

Mutating the entire genome

...o insert pieces of loxP DNA randomly into numerous spots on the mouse genome. So scientists easily can breed multiple generations of mice with loxP surrounding various large stretches of DNA. Then the first part of the new method is used: The mice are bred with mice that carry the Cre gene so any large...

'Guardian of the genome' protein found to underlie skin tanning

...ong the elderly, is the development of small, dark spots that are unrelated to sun exposure. The spots arise when groups of cells begin producing pigment in response to repeated stress or irritation of t...

Trusting your instincts leads you to the right answer

...or not. So while the lower-level cognitive process spots the rotated image as the odd one out, the higher-level function overrides that decision and dismisses the rotated object because it is the same as all the other symbols. When subjects were given the time to engage their higher-level functions, their ...

New species declared: Clouded leopard on Borneo and Sumatra

...d species, has small cloud markings, many distinct spots within the cloud markings, grayer fur, and a doubl...arge clouds on their skin with fewer, often faint, spots within the cloud markings, and they are lighter in color, with a tendency toward tawny-colored fur a...

UF scientists discover new genus of frogmouth bird in Solomon Islands

...re uniform. Its speckles are larger, and the white spots on its breast and underbelly are more pronounced than on other frogmouths. Two other genera of frogmouths exist: one in southeast Asia and the other in Australia and New Guinea. The Solomon Islands Frogmouth is known to inhabit three islands: Isa...

Gene-bender proteins may sway to DNA

...of regulating gene expression by clasping onto key spots of DNA -- the nucleic acid that contains the genetic instructions. How does the protein recognize a particular binding site" Structural changes in both the protein and DNA, sometimes with the DNA within the complex kinked or sharply bent, allow for ...

Mapping the mouse genome

...uences previously found in human recombination hot spots were also common in mouse genome jungles. They found one motif, CCTCCCT, corresponding to mouse jungles and deserts was conserved among rats, dogs, and chimpanzees, as well as humans. This new, improved mouse genetic map has already yielded valuab...

Siberian lakes burp 'time-bomb' greenhouse gas

...ped in the ice. By placing bubble traps over these spots and under the water the researchers could get daily measurements of the volume of methane released by the bubbles. Walter will continue her work on methane for her UAF International Polar Year post-doctoral project which will provide the first circu...

Embryonic patterning makes the feathers fly

...the difference between having feathers arranged in spots or stripes. For biologists at the University of Southern California and mathematicians at Oxford University in the UK, it’s all a question of patterning. To understand patterning on the molecular and the systems level, the researchers looked at ho...

Unraveling where chimp and human brains diverge

...from DNA microarrays ?vast collections of tiny DNA spots -- to map the activity of virtually every gene in the genome simultaneously. By comparing gene activity in different areas of the brain, the team identified gene networks that correlated to specific brain regions. Then they compared the strength of...

St. Jude finds clues to hearing loss from chemotherapy

...s mating carried mutations in one or more specific spots in their DNA, Zuo explained. The random mutations caused a variety of disruptions of normal functions. However, only some of the mutations were likely to cause hearing loss, and it was not known which mutation each mouse had. Therefore, the St. Jude ...

Snakes' virtual glasses, leopard spots and all-optical transistors

...link.aps.org/abstract/PRE/v74/e011914 Leopard's spots and Zebra's stripes inspired the ancient myths fam...uars as the animals age. Both felines sport simple spots when they are kittens. By the time they're adults, Jaguar's spots have turned to polygons, while Leo...

Protein connections: A network to understand disease

...ntified as common partners." "In this network are spots where many proteins interact," she said. "These are key proteins." These proteins, she said, could be extremely important in insuring normal neuronal function. "When you step back, you realize this is applicable to any human disease," she said. "...

New human retrovirus originated in mice

...iruses. The oligonucleotides are deposited as tiny spots on a small glass chip. To detect viruses from tis...equences on the chip. The telltale fluorescence on spots on the chip signaled the presence of viral genetic material in the sample. Although the Virochip co...

Science finds new fix for UV-damaged skin in arthritis treatment

...he amount and appearance of hyperpigmentation, age spots and uneven melanin distribution. Researchers paire...re and more melanin ?which eventually leads to age spots and uneven discoloration. Additionally, as skin ages, cell turnover slows down and melanin "dust" ?m...

Study reveals classic symbiotic relationship between ants, bacteria

...cs they produce. He made a key insight that white spots on the ants, which were previously dismissed as "waxy blooms," were actually colonies of bacteria. In the latest phase of his research, Currie, who began this study when he was at the University of Kansas, and his team removed the external blooms of...

'Genetic network' guards against lethal DNA damage

... this case is a microarray: a grid of thousands of spots on a piece of glass that holds a unique "sensor" strand of DNA that matches one of the barcodes. Machines then read the microarray to identify which of the sensors found matching barcodes that identified specific yeast cells with specific mutations. ...

Attractive birds more immune against bird flu

...g season and that males that unfurl their forehead spots most are those that produce the most antibodies. The findings not only enhance our understanding of why animals behave and look the way they do but also help explain why animals that choose their own mates produce healthier offspring than animals w...

Nanotechnology may find disease before it starts

...righten the resulting image. One day, those bright spots may indicate that a few cells in the area may be on the verge of mutating and growing out of control. "The long-term goal is to use this technology to improve our ability to identify very early cancers and other diseases," said Jun Liu, a study co-a...

Of mice, men, trees and the global carbon cycle

...bon dioxide given off by plants is one of the weak spots in models of global carbon cycling." To predict how fast atmospheric carbon dioxide will rise in the future, it is important to know all the sources that emit the gas and all the sources that soak it up. The amount of carbon dioxide in the atmosphe...

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(Date:10/14/2014)... new study published in Cancer Research shows ... and colon cancers—can promote the development of skin cancers ... and survival of sun-damaged skin cells. , Previously considered ... proteins called sirtuins that help regulate genomic stability and ... SIRT6 helps repair DNA damage, which can lead to ...
(Date:10/14/2014)... a new kind of stem cell that can become either ... vessels, according to a study published today in the journal ... cell type contradicts current theory on how organs arise from ... origins of, and future treatment for, liver cancer., Thanks to ... complex being made up of more than 200 cell types. ...
(Date:10/14/2014)... by the Chinese Academy of Agricultural Sciences in Beijing, ... brief genomic history of tomato breeding, based on sequencing ... C.M. Rick Tomato Genetics Resource Center at UC Davis ... seed of both cultivated tomato varieties and related wild ... tomato genome sequence completed just two years ago, shows ...
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