Multinational research: protecting ecology means understanding people, too
...r those U.S. agencies where long-time, experienced biologists have been studying the ecological problems for decades. More than one half of the Senior Executive Service members at the Department of the Interior, U.S. Department of Agriculture-Forest Service and the Environmental Protection Agency are expected ...New textbook illuminates the close links between evolutionary and molecular biology
... Press ( www.cshlpress.com ), is geared toward all biologists seeking a clear, current, and comprehensive accoun...e ( www.evolution-textbook.org ) will be useful to biologists who incorporate Evolution into their undergraduate- or graduate-level courses. The site includes ...Evolution is driven by gene regulation
... Developmental Biology at Yale. The challenge for biologists is accounting for what causes the substantial difference between the person and the chimp. Conventional wisdom has been that if the difference is not the gene content, the difference must be in the way regulation of genes produces their protein pr......usly thought in one widely studied species,leading biologists say. The findings show that at least in plant evolution, sex with others may bemore trouble than its worth. The mustard-like plant Arabidopsis thaliana lost interest in sex and startedself-pollinating at least a million years ago, said plant gene...Genetic analysis finds greater threat in frog-killing fungus
...ause they would have co-evolved together. However, biologists theorize that changes to the environment - from gl...ntain yellow-legged frog as an endangered species, biologists are racing to find ways to staunch the spread of the frog-killing fungus. "This frog used to be th...A sensory organ, not the brain, differentiates male and female behavior in some mammals
... differences between male and female behavior. Now biologists at Harvard University say these efforts may have fallen flat because such differences may not arise in the brain at all. Rather, they say, the epicenter of sex-specific behavior in many species may be a small sensory organ found in the noses of all...How cells change the pace of their steps
...rdless of their size or shape, cells use what cell biologists call the cell motility cycle to take one step per cycle: first, the cell extends its leading margin over the substratum forming a pseudopod or foot-like extension; secondly, the tip of the pseudopod develops an adhesion point that attaches to the sub...Biologists at Tufts University discover 1 reason why chromosomes break, often leading to cancer
...the Aug. 3 journal "Molecular Cell," two molecular biologists have used yeast artificial chromosomes to prove the hypothesis. The Tufts researchers have found a highly flexible DNA sequence that increases fragility and stalls replication, which then causes the chromosome to break. Catherine Freudenreich, asso...Coelacanth fossil sheds light on fin-to-limb evolution
...ally different and very diverse. Until now, many biologists have looked at lungfish as a primitive model of the evolution of tetrapods. Our fossil shows that what weve been using to define a primitive state is actually very specialized, Friedman said, which means it might give a deceptive view of what evoluti...To help molecular biologists in the difficult task of keeping abreast of current events in the world of cells and organisms, they employ reporter genes to 'broadcast' specific happenings. For example, if a scientist is interested in the whereabouts and activities of a certain ge...Picky eating potentially perilous for bats
...ay be an important characteristic for conservation biologists to consider when evaluating the extinction risk of bat species. In addition, their study may help develop models for predicting a species risk of extinction. However, similar studies are needed on additional bat families before we can fully understan...Genetic diversity in honeybee colonies boosts productivity
...he reasons for honeybees' promiscuity, the Cornell biologists inseminated 12 queens with sperm from 15 drones (a different set for each) and nine additional queens with sperm from a single drone (but a different one in each case). They then prompted the hives to swarm in early June to form new colonies. "After ...Fruit fly research may 'clean up' conventional impressions of biology
...st about flies, but about life in general. While biologists have long known that the structure of adult animals follows a blueprint laid out in the early stages of embryonic development, classical biological experiments have provided only isolated "snapshots" of the development process, denying scientists a c...Sequencing method yields fuller picture
University of Southern California biologists have developed a method for sequencing both chromosomes of an organism. Their study appears in a recent issue of Genome Research. The statistical method is significant because when researchers announce they have sequenced an organisms genome, t...Scientists to make news at Computational Biology Conference
...the landscape at a giant assembly of computational biologists in Vienna in mid-July. From new ways to discern ho...ientists that supply the computational methods and biologists that ultimately reap the fruits of the research," says Lengauer, "Thus the scientists come from diff...Foxes get frisky in the far north
...en it comes to mating. Until recently, wildlife biologists considered many species of caninesincluding foxes, wolves and coyotesto be monogamous. But molecular genetic techniques are starting to reveal complexities in mammalian mating systems that were not apparent from observational studies of animal social...Study provides new data about the laws governing embryo development in organisms
... step forward thanks to collaborative work between biologists specialized in the study of the fruit fly (Drosoph...both Drosophila and vertebrate species. Although biologists already had an intuitive idea of how the limit or border between these compartments was generated, t...It don't mean a thing if it ain't got that (modern) swing
...lution. http://tinyurl.com/2spvwk Evolutionary biologists have been puzzling over why bird songs of a single species can vary significantly from one population to the next, but Derryberry's work shows the songs changing with time as well. Her thesis advisor, Duke biology professor Stephen Nowicki, has done ...Size and positioning of floral anthers facilitates pollen collection by bees
... numerous genes studied, both zoologists and plant biologists have begun to understand that gene sequences alone cannot explain diversity. Within the last few years, scientists have begun to identify groups of genes, called networks, which control complex programs that determine an organisms final form. In a...... numerous genes studied, both zoologists and plant biologists have begun to understand that gene sequences alone cannot explain diversity. Within the last few years, scientists have begun to identify groups of genes, called networks, which control complex programs that determine an organisms final form. In addi...