Repetitive DNA in the genome of Neisseria meningitidis
...e remainder of the repeat arrays consist of larger dispersed repeats, including the 37-160 bp Correia elements which are present 257 times and copies of the three common insertion elements. The larger repeat arrays are exclusively associated with genes that encode functions associated with the cell surface. Du...Tropical tree distribution could have implications for forest management, conservation
...ical trees of the same species are "aggregated" or dispersed randomly across the landscape. A census of six lar...se patterns." The notion that species were widely dispersed dominated theoretical tropical ecology from 1853 until 1979 when Stephen Hubbell, another co-author ...Blind, naked mole-rats not the inbreeders biologists once thought
...n, Braude caught 21 of the tagged animals that had dispersed from their original colonies and had either formed... breeding male of a new colony; he had originally dispersed from his birth colony between 1988-89. "The fact that this fellow was not recaptured for 10 years s...Taking the long view: examining factors which influence Northern Spotted Owls
...the owls. The researchers further suggest that dispersed patches of different vegetation types may provide a stable prey resource to the owls which could help to buffer them against the effects of a variable climate. Also, say the scientists, it would be far more likely that a future catastrophe in...How to keep invasive plants out of forest fragments
...ew England. The researchers studied seeds that are dispersed by the wind because many invasive plants have wind-borne seeds. To see how the forest edge's structure affected seed invasion, the researchers compared two types of edges: intact and thinned. They created 130 feet of thinned edge by removing all tree...Agent Orange might boost the risk of leukemia, UNC researcher says
...pters, but considerable amounts of herbicides were dispersed from boats and ground vehicles and by soldiers wearing back-mounted equipment. A 1969 scientific report concluded that one of the primary chemicals used in Agent Orange could cause birth defects in laboratory animals. As a result, the U.S. military s...Researchers pinpoint how tubeworm babies are dispersed to colonize new vent sites
... mustwithstand these cold temperatures as they are dispersed by the currents, hopefully to a home in warmer water near a vent site. The scientists found that tubeworm larvae do not develop a mouth in the first 34 days of development, so they cant obtain energy from food during this period to help them weath...Botanists collect, study rare Hawaiian plants
...ere. This suggests that maybe freshwater algae are dispersed more easily than we thought they would be." Vis's goal is to study how algae populations on different continents are related, and to determine if there are unique varieties of the plant that should be conserved. "I'm trying to go to places in the w...Purple potato boost for organic food industry
...to and, to a lesser extent, tomato. The fungus is dispersed by wind-borne spores, which emerge from the stomata (breathing holes) of infected leaves in humid conditions. When the spores land on a new leaf surface they enter the leaf stomata and germinate.* The first symptoms of potato blight are small lesions...Rafting rodents from Africa may have been ancestors of South American species
...nts a dilemma, because either caviomorph ancestors dispersed to South America from Africa over water (e.g., by rafting) or the caviomorph radiations are considerably older than suggested by the paleontological evidence. We're seeking answers by using molecular data to address these questions." Honeycutt, his ...Discovery of dynamic sub-cellular processes could lead to medical applications
...d that the proteins from the structure itself were dispersed to unexpected areas of the cell. The article says the finding "suggests that the entire Golgi apparatus is continuously being assembled and disassembled." Storrie is now pursuing research in conjunction with the Carilion Biomedical Institute in Roano...Still waters? 'Clear-cutting' robs the deep-sea of ancient treasures
...scarpment seeps, yet it's unlikely they could have dispersed from one spot to the other....Dartmouth biologists say algae might be missing mercury link in aquatic food chain
... there is a lot of algae present, methylmercury is dispersed widely throughout the single-celled algae. As a result, Daphnia that eat the algae arent exposed to high levels of mercury. However, in systems with less algae, the mercury is more concentrated on each plant cell, so the Daphnia eat more mercury with...Fisheries forecasting in the Niger inner delta
...e onset of the next flood, when again the fish are dispersed into flooded areas. Fishing activity is therefore dependent on the hydrological seasons. Two measurable hydrological parameters can express these: rainfall and river discharge. IRD scientists have sought to determine the extent to which these two var...Imagine no restrictions on fossil-fuel usage and no global warming
...2 generated from transportation sources and small, dispersed sources that account for nearly half of all carbon dioxide emissions. The air is passed over an extraction agent, for example a solution of quicklime, the active agent in some cement. As the air passes over the extraction structure, the carbon dioxi...UF expert: ancient fossil suggests flowers may be underwater gift
...above the water, Dilcher said. The seeds probably dispersed in the water and floated up along the shore and germinated in shallow water, he said. The mysteries of the origin and radiation of the flowering plants remain among the greatest dilemmas facing paleontology and evolutionary biology, said William L. ...Ancient flower fossil points to underwater origins
...e the water, Dilcher said. The seeds probably dispersed in the water and floated up along the shore and germinated in shallow water, he said. "The mysteries of the origin and radiation of the flowering plants remain among the greatest dilemmas facing paleontology and evolutionary biology," said Willi...Low-level oil spills can cause serious damage
...ught to be relatively mild because strong currents dispersed the oil. In the immediate aftermath, it seemed that the lives of all but a few marine animals were spared. The researchers' findings suggest that the iguanas died because oil killed off a beneficial microorganism that lives in the animals' guts and h...UC study links parasites in freshwater runoff to sea otter deaths
... "It may be how the sewage is being discharged and dispersed in the ocean," she said. Conrad, a UC Davis parasitologist, is examining the bivalves that sea otters feed on to see if Toxoplasma is concentrating in mussels. "If the bivalves located near a sewage outflow site are able to concentrate oocysts presen......us substance known. A gram of the toxin, if evenly dispersed and inhaled, could kill a million people, according to a recent study. Yet no anti-botulism drugs are available which could be produced in the quantities needed for treatment or prevention if the toxin were used for bioterror, the new study points ou...