Soldier or worker what do the genes say?
...s, called bric-a-brac and bicaudal, which regulate patterning in the fruit fly, Drosophila. Bric-a-brac works by inhibiting the expression of other genes. Increasing the expression of such a gene in workers may turn off 'soldier-specific' genes. Bicaudal is involved in the formation of the fly head and thorax. ...Translational repression in germline development
...e oskar, which has critical functions in embryonic patterning and the formation of germline cells, is repressed during its transport to the posterior pole of the oocyte. This transcript-specific repression is known to be mediated by the protein Bruno, which binds to the 3' UTR of oskar mRNA, but the underlying ...University of Toronto scientists light a path for new nerve cells
...ed nerves. "This is the first example of doing 3-D patterning with this type of gel material and is applicable to transparent materials," says Shoichet. While previous techniques have created three-dimensional gel structures, they involved a time-consuming layering process.......ng as well as the mechanisms regulating epigenetic patterning during development and postnatal life. They may also serve as a potential model for examining the role of epigenetic change and chromatin remodeling in cancer predisposition with implications for possible therapeutic targeting."...Altered expression of key developmental genes underlies evolution of butterfly wing patterns
... Madison, show how the regulation of developmental patterning genes changed during the evolution of line and eyespot color patterns. Comparing eight species of moths and butterflies, the researchers found that signature alterations in the timing of expression of two well-studied genes, Notch and Distal-less, ma...Geologists discover water cuts through rock at surprising speed
...y samples closely spaced to understand the spatial patterning of how and when the rivers cut into rock, according to Paul Bierman, professor of geology at the University of Vermont and co-author of the Science paper. "Without such detail, we never would have been able to detect the link with climate, nor woul...Ancient life form may help create newest technologies
... the internal structure and how successfully it is patterning the nanocomposite material we're seeking, but the results so far are very encouraging." Rorrer said this is a way to let nature do the engineering. "With this approach, the living organism does the work and creates the order we want at the nano leve...Stanford researcher's findings may shed light on common, deadly birth defect
...he cells and pathways involved in brain and facial patterning are conserved between the species. Cordero used a chemical aptly named cyclopamine to interfere with developmental signals sent by sonic hedgehog, a protein previously implicated in HPE. Although exposure early in development created cyclopic embryos......Ps in developmental processes from axon growth and patterning to extraembryonic vasculogenesis.......he chicken develops, dividing the embryo into body patterning segments, and later giving rise to the vertebrae, ribs and the muscles of the trunk. The presomitic mesoderm, from which somites form, consists of a pair of strips made up of mesenchymal cells running down the embryo's back. After the boundaries of a...