Invasive species such as kudzu, privet and garlic mustard can devastate ecosystems, and, until now, scientists had little reason to believe that native plants could mount a successful defense.

Biology - Evolution

Jun 28, 2012 not rated yet 3 |

Genetic diversity arises through the interplay of mutation, selection and genetic drift. In most scientific models, mutants have a fitness value which remains constant throughout. Based on this value, they compete with other ...

Biology - Evolution

Jun 28, 2012 not rated yet 0 |

The throat and facial movements that twist the air pushing through your vocal cords into words could be rooted in the well-meaning expressions primates exchange with each other, according to two recent studies based at Princeton ...

Biology - Evolution

Jun 20, 2012 3 / 5 (1) 0 |

(Phys.org) -- University of Auckland scientists have provided the first experimental explanation of how sexual reproduction helps species adapt in challenging real-world environments, solving a classic conundrum in evolutionary ...

Biology - Evolution

Jun 14, 2012 5 / 5 (5) 1 |

(Phys.org) -- Sure, sex may be fun, but it’s a lot of work, and the payoff is by no means certain. Scientists have speculated for a long time on why all living things don’t simply make like amoebas ...

Biology - Evolution

May 30, 2012 4 / 5 (4) 6 |

(Phys.org) -- In the course of its evolution, the architecture of the mouse brain may have barely changed. Similar to the tiny ancestors of modern mammals that lived about 80 million years ago, nerve cells ...

Biology - Evolution

May 23, 2012 5 / 5 (3) 0 |

Environmental change is the selective force that preserves adaptive traits in organisms and is a primary driver of evolution. However, it is less well known that evolutionary change in organisms also trigger ...

Biology - Evolution

May 23, 2012 4 / 5 (2) 0 |

From the inside of our heads, it feels as if colors are intrinsic aspects of the outside world and our eyes are beautifully designed to see them. But we humans are merely sampling the possible ways of sensing the spectrum ...

Biology - Evolution

May 21, 2012 4.9 / 5 (12) 4

(Phys.org) -- Sleight of hand is a trait that belongs mainly to humans. Or so scientists thought. Studies of common, microscopic ocean plankton named Prochlorococcus show that humans aren't the only ones w ...

Biology - Evolution

May 11, 2012 5 / 5 (6) 4 |

Researchers have found that bird species with multiple plumage colour forms within in the same population, evolve into new species faster than those with only one colour form, confirming a 60 year-old evolution ...

Biology - Evolution

May 09, 2012 3.4 / 5 (5) 39 |

In a paper published May 3, in the journal Evolution, University of Cincinnati graduate student Karl Grieshop and Michal Polak, associate professor of biological sciences at UC, examine the role of genita ...

Biology - Evolution

May 03, 2012 not rated yet 3 |

New evidence proves humans are continuing to evolve and that significant natural and sexual selection is still taking place in our species in the modern world.

Biology - Evolution

Apr 30, 2012 4.1 / 5 (23) 98 |

(Phys.org) -- Not all acts of altruism are alike, says a new study. From bees and wasps that die defending their nests, to elephants that cooperate to care for young, a new mathematical model pinpoints the environmental conditions ...

Biology - Evolution

Apr 30, 2012 4.5 / 5 (4) 1 |

Analyzing DNA from four ancient skeletons and comparing it with thousands of genetic samples from living humans, a group of Scandinavian scientists reported that agriculture initially spread through Europe because farmers ...

Biology - Evolution

Apr 30, 2012 5 / 5 (11) 1

Ammonites changed their reproductive strategy from initially few and large offspring to numerous and small hatchlings. Thanks to their many offspring, they survived three mass extinctions, a research team ...

Biology - Evolution

Apr 23, 2012 not rated yet 1 |