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Tag: "distinction" at biology news

Scientists document complex genomic events leading to the birth of new genes

...-sized ape chromosomes and is the only cytogenetic distinction separating humans from apes. At the molecular level, however, the differences among the species are much more complex. Bork's team systematically searched the complete genomic sequences from a broad range of taxa (mouse, rat, roundworm, fruit fly, m...

Scientists use manufacturing methods to reconstruct mastodon

...he American Mastodon as Michigan's state fossil, a distinction bestowed in 2002, after Washtenaw Community College professor David Thomas and students from Ann Arbor's Slauson Middle School petitioned the State Legislature. The expanded exhibit will showcase Fisher's contributions to understanding how mastodons...

'Punctuated' evolution in the human genome

...ape chromosomes, and it is the primary cytogenetic distinction separating humans and their evolutionary progenitors. Within this 700 Kb region of human chromosome 2, the researchers identified segments of DNA that originated from 14 ancestral loci. These DNA segments, or "duplicons," ranged from 4-77 Kb in leng...

High carbon dioxide levels spur Southern pines to grow more needles

...er counts, she explained. "I'm trying to draw the distinction between closed canopy versus non-closed canopy, because when a canopy is not closed you're mixing several issues," she said. She also noted that experiments with other non-conifer broad-leaf species have made some scientists conclude that CO2-treate...

Locusts' built-in 'surface analysis' ability directs them to fly overland

... mainly diffused, non-polarized light), enabling a distinction to be made between the two. "When the locusts are presented with a situation of choice between surfaces reflecting either polarized or diffused light, they exercise their preference to fly over the (dry land) area of diffused light," said Dr. Shashar...

New discovery blurs distinction between human cells and those of bacteria

... see the particular amino acids and atoms." A key distinction separating the cells of primitive organisms like b...her bacteria, Yeates said. "Our findings blur the distinction between eukaryotic cells and those of prokaryotes by arguing that bacterial cells are more complex t...

Nighttime Dying Linked To Sleep Apnea From Brain Cell Loss

... see the particular amino acids and atoms." A key distinction separating the cells of primitive organisms like b...her bacteria, Yeates said. "Our findings blur the distinction between eukaryotic cells and those of prokaryotes by arguing that bacterial cells are more complex t...

Field tested: Grasslands won't help buffer climate change as carbon dioxide levels rise

... see the particular amino acids and atoms." A key distinction separating the cells of primitive organisms like b...her bacteria, Yeates said. "Our findings blur the distinction between eukaryotic cells and those of prokaryotes by arguing that bacterial cells are more complex t...

APS lecturer shows rare video of 'teacher-student' immune cell interactions in live animal

...dvance the technology, von Andrian said. His lab's distinction was in adapting the technology for use in lymphoid organs in live animals. ...

A new look at the state of the oceans

...stems, the term 'diversity' not only describes the distinction between biological species, but also refers to the divergence within established species. This leads to a completely new evaluation of the species concept. For the recording and description of new species, fast access to existing information is absol...

The brain's executive is an 'event planner'

...e events that will result from those actions. The distinction is significant, said the researchers, because it yields new basic insight into a central function of behavioral planning in this higher brain region, called the lateral prefrontal cortex (PFC). The researchers, led by Hajime Mushiake of Tohoku Univ...

Himalayan forests disappearing

...e events that will result from those actions. The distinction is significant, said the researchers, because it yields new basic insight into a central function of behavioral planning in this higher brain region, called the lateral prefrontal cortex (PFC). The researchers, led by Hajime Mushiake of Tohoku Univ...

Surprising symbiosis: Glassy-winged sharpshooter eats with friends

...evolve into organelles of the insect, losing their distinction as bacteria altogether. Looking ahead, Eisen is continuing to explore the genomes of other animal-bacterial symbioses to understand how such systems originate and work. "Symbiosis is a pervasive strategy in biological systems and we still do not ...

Fatty fish protects against cancer

... consumption and renal cancer is that they made no distinction between fatty and non-fatty fish." One significant difference between oily and non-fatty fish lies in how much omega-3 fatty acids and vitamin D they contain ?substances that, according to earlier cell studies, seem to protect against cancer. Fatty ...

Mirrors in the mind: New studies elucidate how the brain reflects onto itself the actions of others

...ons from those of someone else. The basis for this distinction is explored in the study reported by Simone Schütz-Bosbach, Patrick Haggard, and colleagues, who used an established method--the so-called rubber-hand illusion--for experimentally manipulating the sense of body ownership. This approach was useful bec...

Health Canada approves cold and flu medicine

... and natural health products in general, the major distinction is that natural health products are derived from natural sources. Natural health products require the same degree of scientific evidence as drugs to support their claims. Natural health product regulations are also similar to drug regulations with re...

Infection detectives use disease 'fingerprints' to track common infections in children

...accuracy. Further investigation demonstrated clear distinction between viral and bacterial pneumonias. The next step will be to study whether the microarray analysis can be applied in a more challenging clinical setting, such as an emergency room. "When a child comes in with a fever to the ER, we want to ...

Hearts of male and female rainbow trout are different

...er. The trout heart is a composite organ and layer distinction is important because the epicardium, much like the human heart, receives oxygenated blood via the coronary circulation. Conversely, the endocardium is supplied by only deoxygenated blood returning from the rest of the body. Not surprisingly, the auth...

Lessons from the orangutans: Upright walking may have begun in the trees

...inin," fossils from those of other apes. But, this distinction is complicated by recent fossil evidence that some early hominins, including Lucy ( Australopithecus afarensis ), lived in woodland environments, while even earlier forms such as Millennium Man ( Orrorin ) appear to have lived in the forest canopy an...

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