Hidden diversity: DNA 'barcoding' reveals a common butterfly is actually 10 different species
... When the centuries-old method of telling insects apart -- the examination of their genitalia by John Burns at the Smithsonian Institution - proved inconclusive, the team turned to a recently emerging method for discriminating species: DNA "barcoding," In much the same way that supermarket barcoding can...New hydrothermal vents discovered as 'South Pacific Odyssey' research begins
...-arc basin, where spreading splits the ocean floor apart very close to a volcanic arc. The way the geology works in a back-arc basin is different from the way it works in a mid-ocean spreading center. In back-arc basins, which are widespread in the western Pacific Ocean, a spreading center is located rig...Genes expose secrets of sex on the side
...g 10 distinct human populations from places as far apart as the Netherlands, South Africa and Papua New Guinea. Previous explanations of women and men's migration patterns had been based on a combination of genetic patterns and knowledge about the marriage practice of patrilocality. About 70...Cockroach-like robot leads new research effort
...d using it as a physical model, they hope to tease apart the complex neural and muscular networks in insects. At the same time, they will conduct biomechanical and neurological experiments on insects and develop mathematical models to improve the robot. This multi-pronged approach will allow them to u...Brain has center for detecting sound motion
...ng studies had not been able to conclusively tease apart the two abilities. Ducommun and her colleagues discovered the region by studying a woman who was to be operated on to alleviate intractable temporal lobe epilepsy. The operation would involve the removal of the affected regions of the right anterior ...Genetic analysis rewrites salamander's evolutionary history
...ng particular nuclear genes, we really are teasing apart issues related to our understanding of the tree of life," Wake said. Mueller obtained DNA samples from frozen salamander tissue in the collection of UC Berkeley's Museum of Vertebrate Zoology, and over a two-year period worked with JGI researchers to...Images of 'tail' of protein needed for cell multiplication suggest anticancer drug targets
...ve study required a variety of techniques to tease apart the structure formed by the bonding of the E2 tail to E1. For example, the St. Jude team showed that deleting the tail from E2 significantly hinders the ability of E2 to transfer NEDD8 to Cul1, and blocks its ability to drive cell proliferation. This...Extreme stretch-growth of axons
...he other plate. The plates were then slowly pulled apart over a series of days, aided by a precise computer-controlled motor system. "By rapid and continuous stretching, we end up with huge bundles of axons that are visible to the eye," says Smith. The axons started at an invisible 100 microns and have bee...Molecular motor myosin VI moves 'hand over hand,' researchers say
... the same distance, the molecule must somehow come apart and then snap together again," Selvin said. "To understand how it accomplishes this feat will require further study." The co-authors of the paper are Selvin, Hyokeun Park and Ahmet Yildiz at Illinois, and Li-Qiong Chen, Dan Safer, H. Lee Sweeney and...Streptococcus infects humans by thwarting blood clotting
...locked in this evolutionary dance and would evolve apart from other host-bacterial pairs -- ending up with a multitude of variants of streptococci, one for each host. "This evolutionary mechanism probably functions for many other pathogenicity factors, not just streptokinase, and probably underlies the spe...Strep disrupts blood clotting to infect humans
...locked in this evolutionary dance and would evolve apart from other host-bacterial pairs---ending up with a multitude of variants of streptococci, one for each host. "This evolutionary mechanism probably functions for many other pathogenicity factors, not just streptokinase, and probably underlies the spec...Scientists reinvent DNA as template to produce organic molecules
...s used to zip together the small molecules are far apart on a DNA template. This means that a template strand of 30 DNA bases, complementary to Liu's DNA codes for three different organic molecules, can encode three separate chemical reactions, leading to the multistep DNA-programmed synthesis of relativel...Forgetting, reminding, and remembering: The retrieval of lost spatial memory
...ocampal damage is a failure of retrieval. Teasing apart this story fully will require more experiments, but in the meantime, de Hoz et al. have contributed a much needed resource for investigating the neural basis of memory loss....Why some animals have smaller eyes: Lifestyle matters
...will increase somewhat. Then our eyes move farther apart in the face as the head grows. And we'll never be that cute again....Two-month study of life in mid-Atlantic yields trove of species, new insights & questions
..." at the end of the fishing apparatus that sets it apart from other known species ("Fig. 8." Photo credit: Tracey Sutton); An unusual member of the Promachoteuthidae family of squids, distinguished by their small heads and small eyes covered with a semi-opaque pseudo-cornea ("Fig. 7". Promachoteuthis me...NHGRI adds 18 organisms to sequencing pipeline
...erstand the unique DNA sequences that set primates apart from other mammals and humans apart from other primates. The second group chosen for the new sequencing effort includes nine non-...Lake research offers clues to managing crayfish invasions
...und that two of the testing lakes, just five miles apart and similar in water chemistry, looked very different underwater in terms of rusty crayfish, fish and plant life. While Big Lake had a high abundance of the invasive species, but low abundance of bluegills and plants, Wild Rice Lake showed the opposi......oke gold-medal material? What sets Kaitlin Sandeno apart from her swim mates in the 800-meter freestyle? What nuances of form did Klete Keller recently use to close in on Ian Thorpe's world record in the 400-meter freestyle? The answer: skill, a lot of practice, and in some cases, a little help from some ...Research reveals role of gene in infertility
...anded chromosomes in the cell's nucleus are pulled apart and brought together again twice by a team of proteins, resulting in four new male or female reproductive cells. The researchers conduct their studies with a mutant strain of the model laboratory plant, Arabidopsis, in which the RAD51 gene is unabl...Reading hexametric rhyme supports cardiac synchronization, especially after a heart attack
... The three experiments had to be at least 24 hours apart but within 14 days. Results With respect to cardiorespiratory interaction the results of the analysis of the phase difference and the coherence analysis revealed: (1) during recitation of hexameter verse the low frequency oscillations o...