evolutionary biologists

The Ancestor's Tale: A Pilgrimage to the Dawn of Evolution

Richard Dawkins
Cover of The Ancestor's Tale: A Pilgrimage to the Dawn of Evolution
A magnum opus from a scientist isn't common these days. Usually, their writings are in stacks of journal papers, with the occasional monograph highlighting a career. Journal articles remain buried in academic libraries, down the aisle from dusty tomes....

 

Flexibility trumps fitness in sexual reproduction, says new theo...

EurekAlert! - Mathematics and Statistics  Sun, 11/23/2008 - 23:00

(University of California - Berkeley) An intriguing new theory of evolutionary biology says the reason sexual reproduction may be so successful is that it promotes genes that work well in combination with many other genes.

This idea of genetic mixability hits on the difficulty evolutionary biologists have had in understanding sex, specifically its role in population genetics and natural selection.


 

Illuminating biology: An evolutionary perspective

EurekAlert! - Chemistry, Physics and Materials Sciences  Mon, 10/06/2008 - 23:00

(American Institute of Biological Sciences) On Oct. 16-17, AIBS and NESCent will convene a symposium and workshop for educators at the National Association of Biology Teachers conference in Memphis, TN.

The symposium, a successful part of each yearÂ’s NABT conference, allows classroom teachers to hear directly from internationally recognized evolutionary biologists to obtain information about current evolutionary biology research that can be used to bring science alive in the classroom and make it particularly relevant to students.


 

Egalitarian Revolution In The Pleistocene?

ScienceDaily  Mon, 10/06/2008 - 14:30

Although anthropologists and evolutionary biologists are still debating this question, a new study supports the view that the first egalitarian societies may have appeared tens of thousands of years before the French Revolution, Marx and Lenin.


 

Natural Selection May Not Produce The Best Organisms

ScienceDaily  Sun, 07/20/2008 - 22:45

"Survival of the fittest" is the catch phrase of evolution by natural selection. While natural selection favors the most fit organisms around, evolutionary biologists have long wondered whether this leads to the best possible organisms in the long run.

A team of researchers has developed a new theory, which suggests that life may not always be optimal.


 

Natural selection may not produce the best organisms

EurekAlert! - Mathematics and Statistics  Wed, 07/16/2008 - 23:00

(Public Library of Science) While natural selection favors the most fit organisms around, evolutionary biologists have long wondered whether this leads to the best possible organisms in the long run.

A team of researchers has developed a new theory, which suggests that life may not always be optimal. The results of this study appear July 18 in the open-access journal PLoS Computational Biology.


 

Darwin Was Right: Natural Selection Speeds Up Speciation

ScienceDaily  Sun, 04/06/2008 - 07:00

In the first experiment of its kind conducted in nature, evolutionary biologists have come up with strong evidence for one of Charles Darwin's cornerstone ideas -- adaptation to the environment accelerates the creation of new species.


 

Tree Of Animal Life Has Branches Rearranged, By Evolutionary Bio...

ScienceDaily  Thu, 03/06/2008 - 13:00

Evolutionary biologists have re-written the animal tree of life. A new study uses new genomics tools to answer old questions about animal evolution -- and offers up a few surprises among the branches.

The study involved 40 million base pairs of new DNA data taken from 29 animal species. It settles some long-standing debates about the relationships between major groups of animals and offers up a few surprises.


 

Two Oxygenation Events In Ancient Oceans Sparked Spread Of Compl...

ScienceDaily  Tue, 02/26/2008 - 04:00

The rise of oxygen and the oxidation of deep oceans between 635 and 551 million years ago may have had an impact on the increase and spread of the earliest complex life, including animals.

Today, we take oxygen for granted. But the atmosphere had almost no oxygen until 2.5 billion years ago, and it was not until about 600 million years ago when the atmospheric oxygen level rose to a fraction of modern levels.