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Tag: "unlike" at biology news

Fruit fly gene research may shed light on human disease processes

..., a X and a Y" he explains. "However, in the fly, unlike in humans, the Y chromosome does not influence sex. Instead, two X chromosomes signal the fly to be female, and one X chromosome means it will be male." A chromosome is a single DNA molecule that may contain different units of inheritance called ...

Major link in brain-obesity puzzle found

...H2B1 encourages the action and production of JAK2, unlike two other proteins that have been shown by other teams to reduce its activity. Carter-Su is a professor of molecular and integrative physiology and heads the biomedical research division of the Michigan Diabetes Research and Training Center. In a...

ASU researchers test antibacterial effects of healing clays

...fection. It leads to disfigurement, isolation, not unlike that seen in leprosy," Haydel explains. "Traditional antibiotics can only make a difference at the very earliest stages of the disease, so treatments have, in the past, been largely confined to amputations or surgical excision of the infected sites."...

Uncovering DNA's 'sweet' secret

...example, it cannot pair with other nucleic acids - unlike DNA and RNA which can and must pair with each othe...trands align strictly in an antiparallel fashion - unlike DNA which can adopt a parallel orientation. Finally,the irregular spaces between the "rungs" prevent...

New clues to how sex evolves

...chromosome pairing and thus faster reproduction -- unlike organisms that need to find a mate before they can reproduce, and mature more slowly." Evolution under the microscope The tandem arrangement and structural similarities of the him and zim genes suggest they all arose from a common ancestor...

Early HIV treatment fails to restore memory T cells

...ortly after infection, the researchers found that, unlike in blood, intestinal T cells remained low even after several years of HIV treatment in 70% of volunteers, even though only a tiny fraction of these cells were found to be expressing HIV. Furthermore, they found that the level of immune activation in ...

The power of one: A simpler, cheaper method for cell fusion

...he other hand, uses a $100 DC power supply, which, unlike the specialized generator, can be used to power other laboratory equipment. And because of its microscale dimensions, Lu said his technology requires significantly smaller sample volumes. "This could be very important," he said. "For example, if y...

Natural protein stops deadly human brain cancer in mice

...of damaged cells, form cancer tissue. Stem cells, unlike all other cells in the body, are capable of forming almost any kind of cell when the right "signals" trigger their development. For their treatment experiment, the researchers relied on a class of proteins, bone morphogenic proteins, that cause ne...

First major study of mammalian 'disorderly' proteins

... fibroblasts. The IUPs were resistant to the heat, unlike more structured proteins, which fell apart. Based on these studies, the investigators were able to classify all proteins into one of three categories: IUPs; intrinsically folded proteins (IFPs, i.e., fully folded into specific shapes); or mixed order...

Fast-freeze snapshot yields new picture of nerve-muscle junction

...ion, which takes seconds or minutes to complete -- unlike the fraction of a second when using the high-pressure freeze method. What's more, during gluteraldhyde fixation the nematodes writhe around, releasing neurotransmitters while cells become dehydrated, causing synaptic components to get misplaced and s...

MIT material stops bleeding in seconds

...ew materials can be used in a wet environment. And unlike some other agents, it does not induce an immune response in the animals being treated. When the solution containing the peptides is applied to bleeding wounds, the peptides self-assemble into a gel that essentially seals over the wound, without har...

From hot springs to rice farms, scientists reveal new insights into the secret lives of archaea

...of the atmosphere consists of nitrogen gas, which, unlike oxygen, cannot be absorbed by most organisms. Getting usable nitrogen turns out to be a complicated biological process. First, special ''nitrogen-fixing'' bacteria in the environment convert atmospheric nitrogen into ammonia, then ''nitrifying'' bact...

Taking 'chips' to the next level of gene hunting

...-celled yeast genome as starting material because, unlike the human genome, which contains hundreds of thousands of transposable elements of which perhaps a few hundred are actively moving around, the yeast genome contains only a few dozen copies. Like a word-find puzzle, where words are hidden in a jum...

A new target for painkillers

...y come from two cone snail species that eat worms, unlike relatives that eat fish or snails and occasionally deliver a fatal sting to a human fisherman. -- RgIA is from the species Conus regius, which measures 1.6 to 2.8 inches in length and lives from Georgia southward along Central America to Brazil's ...

Tiny bones rewrite textbooks

...eg - belonged to a unique, mouse-sized land animal unlike any other mammal known. They were unearthed from the rich St Bathans fossil bed, in the Central Otago region of South Island. But the real shock to scientists was that it was there at all: until now, decades of searching had shown no hint that furr...

Researchers give name to ancient mystery creature

...nd the molars. The very tall, sharp pre-molars are unlike any others so far discovered in the mammal world. "There is nothing else with teeth quite like it," Craig said. "In an area of North America that's been fairly well studied, it's unusual to have a critter like this pop up. It's not known anywhere ...

History-hunting geneticists can still follow familiar trail

...hat lie outside the nucleus of our cells, mtDNA is unlike the DNA inside the nucleus of a cell that contains genes from both of our parents -- in people and animals mtDNA is exclusively passed from mothers to their children. For humans, this means that all of the mtDNA in our cells are copies of our mot...

Singing for survival

...kills to deal with these social challenges. "Not unlike humans, gibbons assemble a finite number of call units into more complex structures to convey different messages, and our data show that distant individuals are able to distinguish between different song types and understand what they mean. This stu...

A giant among minnows: Giant danio can keep growing

...omparative Physiology, finds that the giant danio, unlike its cousin the zebrafish, appears to have the ability to recruit new muscle throughout its life. Humans have the same ability before birth, but mostly lose it after birth. Because the zebrafish and giant danio are closely related, and the zebrafis...

New evidence of early horse domestication

...nged much physically as a result of domestication, unlike dogs or cattle. So ancient horse bones don't easily reveal the secrets of domestication. With research funding from the National Science Foundation, Olsen's team took a different tack. They looked for circumstantial evidence that people were keepin...

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