News tagged with sexual organ
Diseases and sex: The cocktail maintaining immune gene variation
The great variation of a specific form of immune genes makes organ transplants so complicated. On the other hand, we need such a great variability in order to resist infectious diseases. This is why it also ...
Jan 10, 2012 |
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Brawn and speed make the grade during mate selection
Do more efficient and faster male birds win females over? New research from the United Kingdom suggests that the rock ptarmigan, the Arctic cousin of the grouse, does. University of Manchester researchers ...
Sep 12, 2011 |
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Crickets that live fast die young
Male crickets advertise their attractiveness with a loud and clear call to females. Calling effort has been linked to more mating success, but what are the hidden costs of showing off?
May 26, 2011 |
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Shining a light on trypanosome reproduction
(PhysOrg.com) -- Compelling visual evidence of sexual reproduction in African trypanosomes, single-celled parasites that cause major human and animal diseases, has been found by researchers from the University ...
Feb 17, 2011 |
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'Warrior worms' discovered in snails; Scientists see possible biomedical applications
Scientists at UC Santa Barbara have discovered a caste of genetically identical "warrior worms" -- members of a parasitic fluke species that invades the California horn snail. The findings are reported in ...
Sep 16, 2010 |
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Lessons from the pond: Clues from green algae on the origin of males and females
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 ...
Apr 15, 2010 |
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Right/left handedness of snails changed in the lab
(PhysOrg.com) -- Like most animals, snails have either left- or right-handed asymmetry (chirality), both internally and externally, and the handedness is hereditary. A new study has for the first time found ...
Nov 30, 2009 |
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When someone is raised female and the genes say XY
(AP) -- It's the birth defect people don't talk about. A baby is born not completely male or female. The old term was hermaphrodite, then intersex. Now it's called "disorders of sexual development." Sometimes the person ...
Sep 12, 2009 |
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Big Advantage for the Small -- Climate change influences the size of marine organisms
The ice is melting, the sea level is rising and species are conquering new habitats. The warming of the world climate has many consequences. In the current issue of the renowned journal 'Proceedings of the ...
Jul 23, 2009 |
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Study finds role for parasites in evolution of sex
What's so great about sex? From an evolutionary perspective, the answer is not as obvious as one might think. An article published in the July issue of the American Naturalist suggests that sex may have evolved in part a ...
Jul 06, 2009 |
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Sniffing Out the Physical Condition of Conspecifics
To date, it has been unknown exactly how mammals are capable of sniffing out whether a conspecific is ill. The biologists Prof. Marc Spehr and Daniela Flügge are following a good lead. They have discovered ...
May 07, 2009 |
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After years of research, drug for 'female sexual dysfunction' remains elusive
The pharmaceutical industry's push to find a female version of Viagra has been full of letdowns.
Medicine & Health / Medications
Apr 27, 2009 |
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Uterus sparing surgery is a safe and effective treatment for pelvic organ prolapse
Researchers presented data at the 104th Annual Scientific Meeting of the American Urological Association (AUA) showing that uterus sparing surgery is an effective and safe treatment for women who want to preserve the integrity ...
Apr 26, 2009 |
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Genetic interactions are the key to understanding complex traits
In recent years, genetic studies have uncovered hundreds of DNA variations linked to common diseases, such as cancer or diabetes, raising the prospect that scientists can gauge disease risk based on information ...
Biology /
Jan 22, 2009 |
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