(Phys.org) —As is the case in all areas of science, our understanding of evolutionary biology is… well, evolving. Two such areas are macroevolution (any evolutionary change at or above the level of species ...

Biology - Evolution

Mar 18, 2013 3.8 / 5 (6) 0 |

Inactivated, but still active– how modification of an enzyme governs critical processes in sexual reproduction.

Biology - Cell & Microbiology

May 03, 2013 5 / 5 (2) 0 |

(PhysOrg.com) -- A new study shows the production of sperm is more biologically taxing than previously thought, and expending energy on it has significant health implications.

Biology - Plants & Animals

Jan 30, 2012 4.6 / 5 (11) 8 |

(PhysOrg.com) -- It seems we may have parasites to thank for the existence of sex as we know it. Indiana University biologists have found that, although sexual reproduction between two individuals is costly ...

Biology - Plants & Animals

Jul 07, 2011 4.8 / 5 (8) 3 |

Remote lochs along the west coast of Scotland are turning up new evidence about the origins of life on land.

Other Sciences - Archaeology & Fossils

Apr 13, 2011 4.8 / 5 (5) 0 |

(PhysOrg.com) -- OK, it takes two for human reproduction, and now it seems that plants and animals that can rely on either a partner or go alone by self-fertilization give their offspring a better chance for ...

Biology - Evolution

Oct 21, 2009 3.4 / 5 (18) 1

(PhysOrg.com) -- "Be faithful in small things because it is in them that your strength lies." Mother Teresa's words echo throughout the world. They ring particularly true in the biological kingdom among brown ...

Biology - Plants & Animals

Apr 05, 2010 4.8 / 5 (4) 1 |

In 1871, Charles Darwin sparked debate that continues today when he proposed that human sex differences evolved based on sexual selection. Sexual selection is Darwin's theory that certain physical, mental or psychological ...

Biology - Evolution

Apr 13, 2010 5 / 5 (7) 4 |

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) -- 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 |

(PhysOrg.com) -- Researchers from the University of Cambridge in the UK have for the first time incorporated sexual reproduction in a mathematical model of the evolution of defense against disease, and found the popular myth ...

Biology - Other

Mar 30, 2010 4 / 5 (5) 3 |

Courtship rituals can be all-consuming, demanding time and effort – but now scientists have discovered why it might be worth it.

Biology - Evolution

Apr 09, 2012 3.3 / 5 (6) 8 |

Sex can trigger remarkable female responses including altered fertility, immunity, libido, eating and sleep patterns—by the activation of diverse sets of genes, according to research from the University ...

Biology - Plants & Animals

Sep 11, 2012 5 / 5 (2) 0 |

A multicellular green alga, Volvox carteri, may have finally unlocked the secrets behind the evolution of different sexes. A team led by researchers at the Salk Institute for Biological Studies has shown ...

Biology - Cell & Microbiology

Apr 15, 2010 4.9 / 5 (9) 0 |

The rise of the first complex life depended on vital metals brought up to the Earth's surface from far below in vast granite deposits, a new study argues.

Space & Earth - Earth Sciences

Aug 07, 2012 4.4 / 5 (7) 13 |