(PhysOrg.com) -- Promiscuous males are so intent on pursuing sexual partners that they can neglect even essential tasks such as eating, says a new study published in the Journal of Evolutionary Biology.
Evolution
Sep 3, 2010
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Men and yeast have something in common: they use the same molecular process to ensure the integrity of their gene pool during reproduction. This is a recent finding by researchers from CNRS, Inserm and the Université ...
Cell & Microbiology
Aug 17, 2010
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A field study of the relationship between testosterone and natural selection in an American songbird, the dark-eyed junco, has defied some expectations and confirmed others.
Plants & Animals
May 4, 2010
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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 ...
Evolution
Apr 13, 2010
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UCSF researchers have identified an elusive molecular regulator that controls the ability of human sperm to reach and fertilize the egg, a finding that has implications on both treating male infertility and preventing pregnancy.
Cell & Microbiology
Feb 4, 2010
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Reproductive researchers from the University of Pennsylvania and The Children's Hospital of Philadelphia have succeeded in isolating and transplanting pure populations of the immature cells that enable male reproduction in ...
Cell & Microbiology
Dec 15, 2009
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Human embryonic stem cells derived from excess IVF embryos may help scientists unlock the mysteries of infertility for other couples struggling to conceive, according to new research from the Stanford University School of ...
Cell & Microbiology
Oct 28, 2009
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Throughout the animal kingdom brilliant colors or elaborate behavioral displays serve as "advertisements" for attracting mates. But, what do the ads promise, and is there truth in advertizing? Researchers at Yale theorize ...
Other
Jun 18, 2009
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Manipulation of male and/or female genitalia results in a suite of changes in female reproductive behavior in tsetse flies, carriers of African sleeping sickness.
Plants & Animals
May 14, 2009
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A newly released study by researchers at the University of Alaska Fairbanks offers evidence that in one breed of northern seabird, the size of males' feather crests may be more than simple ornamentation.
Plants & Animals
Apr 16, 2009
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