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14 matches found for "male genitalia"
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Genital stimulation opens door for cryptic female choice in tsetse flies
"To the best of our knowledge, this was the first study to look at female choice following experimental manipulation of both male and female genitalia," said William Eberhard, staff scientis...
Life Sciences |
Read moreHairspray is linked to common genital birth defect
The study is the first to show a significant link between hairspray and hypospadias, one of the most common birth defects of the male genitalia, where the urinary opening is displaced to the underside...
Studies and Analyses | Read moreHow 'Secondary' Sex Characters Can Drive the Origin of Species
In the September 2008 issue of Evolution (now online), Armin Moczek and Harald Parzer examine males from four geographically separated populations of the horned beetle species Onthophagus taurus. The ...
Life Sciences | Read moreResearchers find an evolutionarily preserved signature in the primate brain
These findings, published June 20th in the open-access journal PLoS Genetics, indicate that some of these differences arose a very long time ago and have been preserved through evolution. These conser...
Life Sciences | Read moreSex hormone signature indicates gender rather than just chromosomes
In an article published today in the online open access journal BMC Genomics, researchers have shown for the first time that testosterone leaves an irreversible molecular signature in cells that may p...
Life Sciences | Read moreSex is thirst-quenching for female beetles
Dr Martin Edvardsson, whose research is published in the journal Animal Behaviour (August 2007), studied the bruchid beetle Callosobruchus maculatus, a serious pest in warmer parts of the world. Some ...
Life Sciences | Read moreIllicit cosmetic silicone injections carry lethal consequences
A study of individuals who underwent illegal silicone injections revealed a high fatality rate from pulmonary silicone embolism, or obstruction of the lungs. The study was presented today at the annua...
Studies and Analyses | Read moreCertain fish have a special mating preference
A biologist at Washington University in St. Louis has shown that for some fish species, females prefer males with larger sexual organs, and actually choose them for mating. That does not...
Life Sciences | Read moreHow the environment could be damaging men’s reproductive health
Two Scandinavian studies have provided further evidence that environmental factors could be affecting men’s reproductive health. The studies, published online today (Thursday...
Studies and Analyses | Read moreCasanova or caveman: Scientists isolate nerve cells that choreograph male fly’s courtship behavior
When a male fruit fly encounters a prospective mate, he initiates courtship by following her around and gently tapping her with his leg. If she seems interested, he serenades her with a lov...
Life Sciences | Read moreArchaeologists announce discoveries at the ancient Maya site of Waka’ in northern Guatemala
An international archaeological project, sponsored by Southern Methodist University, headed by Dr. David Freidel of SMU, and Guatemalan archaeologist Héctor Escobedo of Universidad de San Carlo...
Ecology, The Environment and Conservation | Read moreNew study seeks to establish mechanism between areas of the brain and continence
When we want to go, why can we "wait"? In other words, when we sense that a bowel movement will be necessary, the body has the ability to defer that action until an appropriate time. A new res...
Studies and Analyses | Read moreBrain may ’hard-wire’ sexuality before birth
Refuting 30 years of scientific theory that solely credits hormones for brain development, UCLA scientists have identified 54 genes that may explain the different organization of male and femal...
Life Sciences | Read moreTwo genes -- Dax 1 and Sry -- required for testis formation
The sex of newborns is dictated by the X and Y chromosomes – girls are XX whereas boys are XY. However, new research from Northwestern University has shown that normal testis formation depends...
Life Sciences | Read more
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