Out of Africa date brought forward
(Phys.org) —A study on human mitochondrial DNA has led to a new estimate of the time at which humans first began to migrate out of Africa, which was much later than previously thought.
News tagged with genetic mutations
Related topics:
mutations
· genes
· cancer cells
· cancer
· proceedings of the national academy of sciences
Genetic mutation may have allowed early humans to migrate throughout Africa
A genetic mutation that occurred thousands of years ago might be the answer to how early humans were able to move from central Africa and across the continent in what has been called "the great expansion," according to new ...
Biotechnology
Sep 19, 2012
6
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Genomics analysis demonstrates natural selection at work
(Phys.org)—A team of researchers at Michigan State University has documented the step-by-step process in which organisms evolve new functions.
Evolution
Sep 19, 2012
1
0
Single gene mutation can sweep through bacterial population, opening the door for the concept of 'species'
Bacteria are the most populous organisms on the planet. They thrive in almost every known environment, adapting to different habitats by means of genetic variations that provide the capabilities essential for survival. These ...
Cell & Microbiology
Apr 5, 2012
3
0
Genetic difference in staph offers clues as to why some patients get infections from cardiac implants
New research suggests that some patients develop a potentially deadly blood infection from their implanted cardiac devices because bacterial cells in their bodies have gene mutations that allow them to stick to the devices.
Cell & Microbiology
Oct 24, 2011
0
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Study shows evolutionary adaptations can be reversed, but rarely
(PhysOrg.com) -- Ever since Charles Darwin proposed his theory of evolution in 1859, scientists have wondered whether evolutionary adaptations can be reversed.
Evolution
May 11, 2011
18
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New genetic study helps to solve Darwin's mystery about the ancient evolution of flowering plants
(PhysOrg.com) -- The evolution and diversification of the more than 300,000 living species of flowering plants may have been "jump started" much earlier than previously calculated, a new study indicates. According to Claude ...
Evolution
Apr 10, 2011
2
0
Complexity not so costly after all, analysis shows
The more complex a plant or animal, the more difficulty it should have adapting to changes in the environment. That's been a maxim of evolutionary theory since biologist Ronald Fisher put forth the idea in 1930.
Evolution
Sep 27, 2010
5
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Fungi can change quickly, pass along infectious ability
Fungi have significant potential for "horizontal" gene transfer, a new study has shown, similar to the mechanisms that allow bacteria to evolve so quickly, become resistant to antibiotics and cause other serious problems.
Cell & Microbiology
Mar 17, 2010
0
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Evolution may take giant leaps
(PhysOrg.com) -- A new study of thousands of species of plants and animals suggests new species may arise from rare events instead of through an accumulation of small changes made in response to changes in the environment.
