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Tag: "branches" at biology news

Researchers offer clues to how leaves patterns are formed

...process over and over compared to the formation of branches in a big, three-dimensional slowly growing tree or... be able to say, we want more leaves on this, more branches on this one or fewer flowers on this plant." ...

NHGRI announces latest sequencing targets

...ncestor. This project targets ten of the earliest branches of animals and fungi along with some of their single-celled relatives providing, for the first time, comprehensive data to fill gaps in our understanding of animal and fungal evolution. Recent research has shown that some genes in the human genome th...

DOE JGI finishes 100th microbial genome

...ganisms invisible to the naked eye, cross all main branches of the tree of life, Eubacteria, Archaea, and even the Eukaryota, which include microscopic fungi, plants, and animals. The 100th microbial genome, a project originally proposed by Dr. Kevin Sowers of the Center of Marine Biotechnology at the Univ...

Major obesity gene is 'lost in the shuffle'

...er bodies that enable them to swing agilely across branches and vines in the jungles. Ishida and Nakayama speculate that the loss of the ASIP gene in gibbons may have played a role in the evolution of the gibbons' uniquely slender body shape and size, although there is no biochemical or physiological evide...

U-M scientists identify major psoriasis susceptibility gene

...we're all shooting for is trying to find out which branches of the immune system are triggering psoriasis, so you don't have to shut down the whole immune system ?only the parts that are important," Elder says. While Elder believes that PSORS1 is the major gene involved in susceptibility to psoriasis, he cau...

How nerve cells stay in shape

...rve cells via dendrites, which branch out like the branches of a tree. The cell-body receives incoming information, and transmits it further through the axon, a long projection from the cell. Nerve cells make contact with each other at highly-specialised locations known as synapses. There, information is not ...

Both alcoholism and chronic smoking can damage the brain's prefrontal cortex

...bcontractors: Ripple LLC in Salt Lake City and two branches of Fraunhofer-Gesellschaft, Europe's largest applied research organization. The University's Role in Creating a Better Artificial Arm University of Utah researchers will focus on developing and testing a "peripheral nerve interface" ?an implanted...

The evolution of food plants: Genetic control of grass flower architecture

...l maize ears are unbranched, and tassels have long branches only at their base. Many different genes control...rescences relative to wild type plants, with short branches replaced by long, indeterminate ones, suggesting that the ra2 gene plays an important role in contro...

University of Utah to help build bionic arm

...bcontractors: Ripple LLC in Salt Lake City and two branches of Fraunhofer-Gesellschaft, Europe's largest applied research organization. The University's Role in Creating a Better Artificial Arm University of Utah researchers will focus on developing and testing a "peripheral nerve interface" ?an implanted...

U of MN researchers identify ataxia gene

...s the country, tracking descendants from two major branches of the family. ...

Predators keep the world green, ecologists find

... to the surface by leaf-cutter ants. "Dead twigs, branches and vine stems from canopy dieback litter the ground, and in places lie in heaps. But in striking contrast with this scenario of destruction, the medium islands presented a relatively normal appearance." Besides proving that the green world hypothes...

Scientists show how thinking can harm brain cells

... The scientists focused on dendrites, the crooked branches of neurons that carry impulses toward the body of the nerve cell, and synapses, the places where impulses pass from neuron to neuron. Injury to dendrites ?characterized by swelling or beading, loss of dendrite spines, and reduction in size ?is seen i...

How the neuron sprouts its branches

...neurons control growth of the intricate tracery of branches called dendrites that enable them to connect with ...hes," said Ehlers. "After all, different dendritic branches can have different functional properties, molecular composition and electrical properties. So, when ...

Scientists narrow the time limits for the human and chimpanzee split

...plit, it tells us that proportional differences on branches in family trees should be considered when proposing new times. For example, we now know that a 10-to-12-million-year human-chimp split would infer a divergence of Old World monkeys from our lineage that is too old (50-to-60-million years ago) to rec...

Wild Gorillas Handy with a Stick

...ol use. Though Mbeli Bai gorillas often use intact branches to help them get around, the authors explain, these are the first observations of wild gorillas using detached objects as tools. However the gorillas acquired their skills, these observations suggest that the intelligence required for tool use evolve...

Did feathered dinosaurs exist?

...phasize that the totality of evidence from various branches of science must be included if we are ever to solve the mystery of bird origins and the origin of avian flight. From their careful examination of the available evidence they offer an interim attempt to define morphologically the most salient features...

'Acid rain' and forest mass: Another perspective

...ons of the various cohorts of the samples of green branches and litterfall. The total nitrogen deposition was greater that that deemed to be the admissible critical load in European forest ecosystems so that the nitrogen saturation of the ecosystems studied is, or shortly will be, a fact. The canopy of the f...

Wright bros. upstaged! Dinos invented biplanes

...thered dino then swooped upwards and landed in the branches of another tree without having to flap its wings and expend muscular energy. "The biplane wing configuration was probably a very first experiment in nature," says Chatterjee of the early flying technique, which was also used by another feathered di...

The earliest animals had human-like genes

... they haven't changed very much in slowly-evolving branches of life, such as vertebrates or annelid worms. This makes vertebrates into something like 'living fossils' in their own right." The discovery that Platynereis also represents a slowly-evolving branch of animal life has important implications for the...

Shade trees getting 'scorched' by plant disease

...d drop prematurely, and as the disease progresses, branches die and the tree declines. Elms may be killed outr...ies eventually decline to the point where the dead branches pose a safety risk and the tree must be removed. According to Gould, current management optio...

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