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Researchers solve piece of large-scale gene silencing mystery
A team led by Craig Pikaard, Ph.D., Washington University in St. Louis professor of biology in Arts & Sciences, has made a breakthrough in understanding the phenomenon of nucleolar dominance, the silencing of an entire parental set of ribosomal RNA genes in a hybrid plant or animal. view more (2008-12-05)
Researchers find protein that silences genes
A team of researchers, including biologists at Washington University in St. Louis, has discovered the key role one protein plays in a major turn-off - in this case, the turning off of thousands of nearly identical genes in a hybrid plant. view more (2006-05-08)
On the High Horse: Why dominant individuals climb the proverbial ladder
In an attempt to grasp complex concepts, humans have tried to represent abstractions like power and dominance through visually-stimulated metaphors such as pyramids and steeples. view more (2008-04-24)
Past experience of pheromones induces dominant courtship behavior in fruit flies
By investigating the interplay between pheromone signaling and behavior in fruit flies, researchers have begun to understand how an adult fly's earlier experience as a young individual can influence its behavior towards other flies as an adult. view more (2005-10-11)
Ritualized submission and pseudo-copulation reduce aggression among male crayfish
Pseudo-copulation-an interaction that mimics sexual copulation-is a behavior known in mammalian communities that reduces aggression and signifies social dominance, particularly among males. view more (2006-11-21)
Myelin suppresses plasticity in the mature brain
Yale School of Medicine researchers report in Science this week genetic evidence for the hypothesis that myelination, or formation of a protective sheath around a nerve fiber, consolidates neural circuitry by suppressing plasticity in the mature brain. view more (2005-09-30)
Despite 'peacenik' reputation, bonobos hunt and eat other primates too
Unlike the male-dominated societies of their chimpanzee relatives, bonobo society-in which females enjoy a higher social status than males-has a "make-love-not-war" kind of image. view more (2008-10-14)
Ethnic discrimination not only based on prejudice
Our belief in power hierarchies is important in how we view and treat people. This is shown in a dissertation by Alexandra Snellman from Uppsala University that examines how racist and sexist prejudice creates social hierarchies and ethnic discrimination in various situations. view more (2007-12-05)
Deep-voiced men get the girls
Women prefer men with deep voices, research from Northumbria University has discovered. view more (2005-03-14)
If You're Aggressive, Your Dog Will Be, Too, Says Veterinary Study at University of Pennsylvania
In a new, year-long University of Pennsylvania survey of dog owners who use confrontational or aversive methods to train aggressive pets, veterinary researchers have found that most of these animals will continue to be aggressive unless training techniques are modified. view more (2009-02-18)
Tibetan monks yield clues to brain's regulation of attention
University of Queensland researchers have teamed up with Tibetan Buddhist monks to uncover clues to how meditation can affect perception. view more (2005-06-07)
Plant polymerases IV and V are special forms of Polymerase II
It's a little like finding out that Superman is actually Clark Kent. A team of biologists at Washington University in St. Louis has discovered that two vital cellular components, nuclear RNA Polymerases IV and V (Pol IV and V), found only in plants, are actually specialized forms of RNA Polymerase II, an essential enzyme of all eukaryotic... view more... (2009-01-07)
Do 3 meals a day keep fungi away?
The fact that they eat a lot - and often - may explain why most people and other mammals are protected from the majority of fungal pathogens, according to research from Albert Einstein College of Medicine of Yeshiva University. view more (2009-10-16)
Meteorites delivered the 'seeds' of Earth's left-hand life
Flash back three or four billion years - Earth is a hot, dry and lifeless place. All is still. Without warning, a meteor slams into the desert plains at over ten thousand miles per hour. With it, this violent collision may have planted the chemical seeds of life on Earth. view more (2008-04-07)
Grazer diversity counteracts plant diversity effects on ecosystem functioning in seagrass beds
Several influential experiments have shown that high plant diversity enhances ecosystem productivity, animal diversity, and invasion resistance. Yet theory predicts that plant and herbivore diversity, which often co vary in nature, should have countervailing effects on ecosystem properties. In the July issue of Ecology Letters, Duffy, Canuel, and... view more... (2003-07-02)
Hostility plays a part in heart disease
Hostility, competitiveness and a dominant personality are all factors that have been shown slightly to increase the risk of a person's developing heart disease. A summary of such findings and some new results were presented by Dr Martha Whiteman, of the University of Edinburgh today, Thursday 29 March, at The British Psychological Society's... view more... (2001-03-26)
Brain, behavior may have changed as social insect colonies evolved
A new study suggests that brain and behavior relationships may have changed in a profound way as larger, more complex insect societies evolved from smaller, simpler ones. view more (2006-11-16)
Testosterone, territoriality and the ‘home advantage’ in football
The `home advantage` is well known in football. The majority of teams in all divisions score more goals and win more games at home than away. Factors such as crowd support, referee bias, and familiarity with a venue, have been used to explain home advantage. New research presented today, Saturday 16 March, at The British Psychological Society... view more... (2002-02-27)
Computers in the classrooom: girls lose out in the boy zone
Boys dominate computers in the classroom, and young girls still see the computer as predominantly a 'male preserve' according to research presented today, Tuesday 15 December, to The British Psychological Society's London Conference, held at the Institute of Education, by psychologists Dr Helen Fitzpatrick (Strathclyde University) and Dr Margaret... view more... (1998-12-03)
Latin American cities join the global club
The urban development in Latin America confronts an exciting phase of change. The reason for this is the globalisation of its metropolises. For a long time these were the centres and end points of the economic and social development, but today they serve as the "gateways to the world". According to a study sponsored by the Austrian Science Fund... view more... (2004-07-05)
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