http://www.physorg.com/ en-us Physorg.com internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine. (PhysOrg.com) -- A protein that plays a key role in copying DNA also plays a vital role in repairing breaks in it, UC Davis scientists have found. The work is helping researchers understand how cancer cells can resist radiation and chemotherapy, as well as how cells become cancerous in the first place. http://www.physorg.com/news179082814.html Biology Thu, 03 Dec 2009 17:30:01 EST news179082814 (PhysOrg.com) -- Meiosis - the pairing and recombination of chromosomes, followed by segregation of half to each egg or sperm cell - is a major crossroads in all organisms reproducing sexually. Yet, how the cell precisely choreographs these chromosomal interactions is a long-standing question. http://www.physorg.com/news177322387.html Biology Fri, 13 Nov 2009 08:13:35 EST news177322387 (PhysOrg.com) -- In the week that the University of Leicester celebrates the 25th anniversary of the discovery of DNA fingerprinting (Thursday September 10) new findings from the world-renowned University of Leicester Department of Genetics reveal for the first time that the male and female do truly communicate -- at least at the fundamental genetic level. http://www.physorg.com/news171707200.html Medicine & Health Wed, 09 Sep 2009 19:00:01 EST news171707200 Research led by scientists at Iowa State University's Plant Sciences Institute has resulted in a process that will make genetic changes in plant genes much more efficient, practical and safe. http://www.physorg.com/news167310456.html Biology Mon, 20 Jul 2009 12:08:09 EST news167310456 Researchers have constructed a light-emitting transistor that has set a new record with a signal-processing modulation speed of 4.3 gigahertz, breaking the previous record of 1.7 gigahertz held by a light-emitting diode. http://www.physorg.com/news164289129.html Physics Mon, 15 Jun 2009 12:52:53 EST news164289129 (PhysOrg.com) -- Substantial advances for applications of nanocrystals in the fields requiring a continuous output of photons and high quantum efficiency may soon be realized due to discovery of non-blinking semiconductor nanocrystals. This discovery recently announced by scientists at the Naval Research Laboratory, University of Rochester, Cornell University and Eastman Kodak Company is an important step to the use of the nanocrystals in various practical devices ranging from low-threshold lasers to the solar cells and biological imaging and tracking. The complete findings of the study are published on line in the May 10, 2009, issue of the journal Nature. http://www.physorg.com/news162753193.html Nanotechnology Thu, 28 May 2009 18:13:54 EST news162753193 Substantial advances for applications of nanocrystals in the fields requiring a continuous output of photons and high quantum efficiency may soon be realized due to discovery of non-blinking semiconductor nanocrystals. This discovery recently announced by scientists at the Naval Research Laboratory (NRL), University of Rochester, Cornell University and Eastman Kodak Company is an important step to the use of the nanocrystals in various practical devices ranging from low-threshold lasers to the solar cells and biological imaging and tracking. The complete findings of the study are published on line in the May 10, 2009, issue of the journal Nature. http://www.physorg.com/news161536250.html Nanotechnology Thu, 14 May 2009 16:11:23 EST news161536250 The Stowers Institute's Hawley Lab and Molecular Biology Facility have developed a "whole-genome sequencing approach" to mapping mutations in fruit flies. The novel methodology promises to reduce the time and effort required to identify mutations of biological interest. The work was published in the May issue of the journal Genetics. http://www.physorg.com/news160751592.html Medicine & Health Tue, 05 May 2009 14:16:47 EST news160751592 Why have some of our genes evolved rapidly? It is widely believed that Darwinian natural selection is responsible, but research led by a group at Uppsala University, suggests that a separate neutral (nonadaptive) process has made a significant contribution to human evolution. Their results have been published today in the journal PLoS Biology. http://www.physorg.com/news152252193.html Biology Tue, 27 Jan 2009 04:16:58 EST news152252193 Genetic recombination, the process by which sexually reproducing organisms shuffle their genetic material when producing germ cells, leads to offspring with a new genetic make-up and influences the course of evolution. http://www.physorg.com/news134908923.html Biology Thu, 10 Jul 2008 11:42:03 EST news134908923 Genetic recombination, the process by which sexually reproducing organisms shuffle their genetic material when producing germ cells, leads to offspring with a new genetic make-up and influences the course of evolution. http://www.physorg.com/news134891109.html Biology Thu, 10 Jul 2008 06:45:09 EST news134891109