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Tuatara, the fastest evolving animal
In a study of New Zealand's "living dinosaur" the tuatara, evolutionary biologist, and ancient DNA expert, Professor David Lambert and his team from the Allan Wilson Centre for Molecular Ecology and Evolution recovered DNA sequences from the bones of ancient tuatara, which are up to 8000 years old. view more (2008-03-24)
The world's oldest bacteria
A research team has for the first time ever discovered DNA from living bacteria that are more than half a million years old. Never before has traces of still living organisms that old been found. view more (2007-08-28)
Accelerated evolution converts RNA enzyme to DNA enzyme in vitro
This 'evolutionary conversion' provides a modern-day snapshot of how life as we understand it may have first evolved out of the earliest primordial mix of RNA-like molecules-sometimes referred to as the "pre-RNA world"-into a more complex form of RNA-based life (or the "RNA world") and eventually to cellular life based on DNA... view more... (2006-03-28)
Bacteria have their own immune system protecting against outside DNA
Bacteria like Salmonella have a complicated immune system that helps them recognize and isolate foreign DNA trying to invade their cell membrane. view more (2006-06-09)
Cracking the genetic code for control of gene expression
Molecular biologists, developmental biologists and computer scientists at the Universtity of Helsinki, Finland, came together to advance towards cracking the code for how gene expression is controlled. view more (2006-01-13)
Natural selection has strongly influenced recent human evolution, Cornell/Celera Genomics study finds
he most detailed analysis to date of how humans differ from one another at the DNA level shows strong evidence that natural selection has shaped the recent evolution of our species. view more (2005-10-24)
Precision biochemistry tracks DNA damage in fish
Like coal-mine canaries, fish DNA can serve as a measure of the biological impact of water and sediment pollution-or pollution clean-up. view more (2006-05-15)
Comparing chimp and human DNA
Scientists look to the chimpanzee genome to better understand what is uniquely human about our own. One goal is to find DNA elements that show evidence of rapid evolution in the human lineage. view more (2006-10-13)
Progress made in HIV vaccine development
Researchers have successfully tested two candidate vaccines that may eventually be used together to confer immunity against HIV infection. Their findings are published in the December 15 issue of The Journal of Infectious Diseases, now available online. view more (2006-11-13)
Common Enzyme is a Key Player in DNA Repair
A quarter century after they discovered it, researchers have identified the job of one of the most common DNA-damage response proteins. view more (2006-01-12)
Why some people are more attractive than others
Researchers believe they have solved a mystery that has puzzled evolutionary scientists for years ... if 'good' genes spread through the population, why are individuals so different? view more (2007-03-28)
DNA size a crucial factor in genetic mutations, study finds
Researchers at Stanford University have created a larger-than-normal DNA molecule that is copied almost as efficiently as natural DNA. view more (2005-10-27)
Mouse to man: The story of chromosomes
The complete sequencing of human chromosome 17 and mouse chromosome 11 offers unique insights into the evolution of the genome of higher mammals. view more (2006-04-20)
Preserved in crystal
Scientists at the Weizmann Institute of Science recently discovered a new source of well-preserved ancient DNA in fossil bones. view more (2006-02-03)
New look at DNA hints at origin of ultraviolet damage
Chemists at Ohio State University have gained new insight into how sunlight affects DNA. And what they found overturns ideas about genetic mutation that originated decades ago. view more (2005-08-25)
Ultraviolet B light exposure associated with increased risk of skin cancer
A decreased ability to repair chromosomal damage caused by exposure to ultraviolet B (UV-B) radiation in test tubes may be associated with an increased risk of the common skin cancers basal cell carcinoma and squamous cell carcinoma, but not of melanoma. view more (2005-12-21)
Region of DNA strongly associated with Alzheimer's disease
An international team of researchers, led by investigators at Washington University School of Medicine in St. Louis, are zeroing in on a gene that increases risk for Alzheimer's disease. view more (2006-01-11)
Basic work on E. coli identifies two new keys to regulation of bacterial gene expression
The cellular process of transcription, in which the enzyme RNA polymerase constructs chains of RNA from information contained in DNA, depends upon previously underappreciated sections of both the DNA promoter region and RNA polymerase, according to work done with the bacterium E. coli. view more (2006-06-19)
New Lifespan Extension Genes Found
New genes tied to lifespan extension in yeast have been identified by researchers from UC Davis and Harvard Medical School. view more (2005-10-03)
Stealth technology maintains fitness after sex
Pathogens can become superbugs without their even knowing it, research published today in Science shows. 'Stealth' plasmids-circular 'DNA parasites' of bacteria that can carry antibiotic-resistance genes-produce a protein that increases the chances of survival and spread of the antibiotic-resistant strain. view more (2007-01-12)
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