Major mutations, not many small changes, might lead way to new species
...and banging it a few times before making the small tweaks to restore its optimal performance," says Douglas Schemske, professor of plant biology at Michigan State University and co-author of the letter in Nature. There are 123 species of monkeyflowers, a wildflower found around the world. Mimulus lewisii ...Research sheds new light on evolution
...en watch a few times before making the final small tweaks to restore its optimal performance," he said. The plants used in the work were produced in a campus greenhouse and then transported to an area near the Yosemite National Park where natural populations of both species occur. "This was a rather unique ...Drug averts Parkinson's disease in fruit flies, suggesting new approach for humans
...ned normal numbers of these neurons. Geldanamycin tweaks the activity of Hsp90, one of a class of proteins known as molecular chaperones. Bonini, Auluck and colleagues showed last year that molecular chaperones can block the progression of neurodegenerative disease in Drosophila, suggesting that diseases ...Museum dinosaur labs draw international researchers
...leste Horner takes the CT scan data, then makes or tweaks the software so it fits the needs of a particular researcher. With Rayfield, for example, she had to convert the CT data into a form that would be compatible with Finite Element Analysis and could be sent over the Internet. Working with her in the 3...Study Associates Asteroid Or Comet Impact With Extinctions In Argentina
...tilde;oor a volcanic eruption produces small tweaks to the climate compared to whatone of these impacts can do." The cyclical cooling of the Earth's temperaturesthat began soon after the impact 3.3 million years ago continues today, hesaid. The study is published in this week's Sci...