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Natural Selection Current Events | Natural Selection News
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Evolution: fish select for the survival of teh fittest
An important breakthrough has been made in determining the forces responsible for the evolution of populations in nature. By studying wild populations of grayling (a close relative of salmon), Mikko Koskinen and Craig Primmer at the University of Helsinki and Thrond Haugen at the University of Oslo found that natural selection, a force suggested... view more... (2002-10-30)
Are humans still evolving? Absolutely, says a new analysis of a long-term survey of human health
Although advances in medical care have improved standards of living over time, humans aren't entirely sheltered from the forces of natural selection, a new study shows. view more (2009-10-20)
St. Bernard study casts doubt on creationism
The St Bernard dog - named after the 11th century priest Bernard of Menthon - may have ironically challenged the theory of creationism, say scientists. view more (2007-10-24)
Geography and history shape genetic differences in humans
New research indicates that natural selection may shape the human genome much more slowly than previously thought. view more (2009-06-08)
More flight than fancy?
Scientists from the universities of Exeter and Cambridge have turned a textbook example of sexual selection on its head and shown that females may be more astute at choosing a mate than previously thought. view more (2007-04-06)
University of Sussex biologists estimate the pace of evolution
Scientists at the University of Sussex have provided the key to resolving a 30-year-old controversy in evolutionary biology: what proportion of the differences between similar species came about as a result of natural selection, and how many are just the result of 'random genetic drift'. In a paper in this week's issue of Nature (28 February),... view more... (2002-02-26)
Ecologists say metabolism accounts for why natural selection favors only some species
Why are some species of plants and animals favored by natural selection? And why does natural selection not favor other species similarly? view more (2008-11-04)
Evolution follows few of the possible paths to antibiotic resistance
Darwinian evolution follows very few of the available mutational pathways to attain fitter proteins, researchers at Harvard University have found in a study of a gene whose mutant form increases bacterial resistance to a widely prescribed antibiotic by a factor of roughly 100,000. view more (2006-04-12)
Butterfly restrains Darwin
In experiments with butterflies, evolutionary biologists from Leiden University have demonstrated that natural selection is not always the only factor which determines the appearance of an organism. Constraints also appear to play a role at times in determining the progress and outcome of the evolutionary process. This research from Leiden... view more... (2002-10-24)
Hundreds of natural-selection studies could be wrong, study demonstrates
Scientists at Penn State and the National Institute of Genetics in Japan have demonstrated that several statistical methods commonly used by biologists to detect natural selection at the molecular level tend to produce incorrect results. view more (2009-03-31)
Insects' 'giant leap' reconstructed by founder of sociobiology
The January 2008 issue of BioScience includes an article by biologist Edward O. Wilson that argues for a new perspective on the evolution of advanced social organization in some ants, bees, and wasps (Hymenoptera). view more (2008-01-02)
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)
Human testes may multiply mutations
The testes in humans may act as mutation multipliers that raise the odds of passing improved DNA to offspring - but that can also backfire by increasing the frequency of certain diseases. view more (2007-08-28)
Embryonic selection of sex avoids conceiving blind children
The Assisted Reproduction Unit at the Quirón Hospital in Donostia-San Sebastián has managed, for the first time in the Basque Country, to successfully carry out an embryonic sex selection in a woman who is a carrier of the disease Retinosis Pigmentaria, linked with the X chromosome - in order to avoid giving birth to a male child. view more (2006-12-19)
Pressured by predators, lizards see rapid shift in natural selection
Countering the widespread view of evolution as a process played out over the course of eons, evolutionary biologists have shown that natural selection can turn on a dime - within months - as a population's needs change. view more (2006-11-17)
Study looks at mitochondrial variation in sperm traits and sperm competitive ability
University of Nevada, Reno researchers Jeanne and David Zeh of the Department of Biology have received a five-year, $650,000 grant from the National Science Foundation to investigate the effects of natural mitochondrial variation on sperm traits and sperm competitive ability. view more (2007-09-20)
Genetic differences influence aging rates in the wild
Long-lived, wild animals harbor genetic differences that influence how quickly they begin to show their age, according to the results of a long-term study reported online on December 13th in Current Biology, a Cell Press publication. view more (2007-12-13)
Anti-perfume - the male butterfly's gift to his partner
Pieris butterflies are not like all other butterflies. Both sexes agree about sex. In a dissertation about olfactory communication, Johan Andersson, a scientist at the Royal Institute of Technology in Stockholm (KTH), Sweden, presents exciting new findings about a joint effort that provides an alternative view of the theory of sexual selection.... view more... (2004-02-23)
Getting an evolutionary handle on life after reproduction
Since many animals live beyond their fertile years, biologists have searched for evolutionary clues to this extended lifespan. view more (2005-12-27)
Human culture subject to natural selection, Stanford study shows
The process of natural selection can act on human culture as well as on genes, a new study finds. view more (2008-02-19)
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