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Ancient DNA traces the woolly mammoth's disappearance
06-07-2007 · EurekAlert!Some ancient-DNA evidence has offered new clues to a very cold case: The disappearance of the last woolly mammoths, one of the most iconic of all Ice Age giants, according to a June 7 report published online in Current Biology, a publication of Cell Press.
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Keywords: ancient, dna, traces, woolly, mammoth, disappearance, trace
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- Hair untangles woolly mammoth puzzle
09-27-2007 · EurekAlert!
New research reveals that hair shafts provide an ideal source of ancient DNA -- a better source than bones and muscle for studying the genome sequences of extinct animals. The researchers' efficient methods yielded entire mitochondrial genomes from 10 woolly mammoths -- more such genomes of extinct animals than previously had been published. The research opens the door to obtaining mitochondrial genome sequences from other extinct species and to understanding how species of large mammals can go extinct.
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- Unexpected Archive: Mammoth hair yields ancient DNA
09-29-2007 · Science News Online
Hair from ancient mammoths contains enough genetic material to permit reconstruction of parts of the animal's genome.
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- Computer program traces ancestry using anonymous DNA samples
09-20-2007 · EurekAlert!
A group of computer scientists, mathematicians, and biologists from around the world have developed a computer algorithm that can help trace the genetic ancestry of thousands of individuals in minutes, without any prior knowledge of their background. The team's findings will be published in the September 2007 edition of the journal PLoS Genetics.
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- DNA gives new perspectives to understand the mysteries of nature
02-13-2007 · EurekAlert!
Scientific breakthrough: What caused the extinction of the woolly rhinoceros ten thousand years ago from an area in Europe covering the coasts of the Arctic Ocean in the north to the coasts of the Mediterranean in the south? What caused the extinction of the mammoth while other ice age mammals like the musk ox just barely survived to present day. A new scientific methodological approach to detect genetic material will help researchers to solve the many mysteries of the past.
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- 454 Sequencing: Science paper describes a novel, highly efficient method of sequencing ancient DNA
09-27-2007 · EurekAlert!
The study demonstrates the efficacy of this new method by employing 454 Sequencing to sequence the entire mitochondria from 10 individual woolly mammoths. Several of the hair samples investigated were up to 50,000 years old with one sample being stored in a Russian museum for 200 years at room temperature. To put this new study in perspective, only seven mitochondrial genomes from extinct animals had been previously published.
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- Cask from the past
10-29-2007 · Massachusetts Institute of Technology (MIT)
For the first time, researchers have identified DNA from inside ceramic containers in an ancient shipwreck on the seafloor, making it possible to determine what the ship's cargo was even though there was no visible trace of it.
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- Viruses for a healthy pregnancy
01-29-2008 · EurekAlert!
Sequences of DNA in the human genome that originated from ancient viral infections have some surprising effects on our bodies and are even essential for a healthy pregnancy, according to an article in the February issue of Microbiology Today.
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- Locked in glaciers, ancient ice may return to life as glaciers melt
08-06-2007 · EurekAlert!
The DNA of ancient microorganisms, long frozen in glaciers, may return to life as the glaciers melt, according to a paper published online this week in the Proceedings of the National Academy of Sciences by scientists at Rutgers, the State University of New Jersey, and Boston University. The article is scheduled to appear in the print edition on Tuesday, Aug. 14.
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- Timeline: From the August 7, 1937, issue
08-11-2007 · Science News Online
Ancient gold and ivory treasures from Palestine arrive in Chicago, searching for Ice Age Americans in New Jersey, and a sampling of airborne microorganisms lost with the disappearance of Amelia Earhart's plane.
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- Globetrotting black rat genes reveal spread of humans and diseases
02-01-2008 · EurekAlert!
DNA of the common black rat has shed light on the ancient spread of rats, people and diseases around the globe. Studying the mitochondrial DNA of 165 black rat specimens from 32 countries around the world, an international team of scientists has identified six distinct lineages in the black rat's family tree, each originating from a different part of Asia.
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