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Clues to women’s longer lives in ‘hotspot’ DNA
MONASH (AUS) — A new study reveals how mutations in mitochondrial DNA can help explain why women tend to live longer than men. Mitochondria, which exist in almost all animal cells, are vital for life...
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Fossils hold evidence of sexual selection
U. SOUTHAMPTON (UK) — Comparisons with living animals make it possible for scientists to detect sexual selection among creatures in the fossil record, say researchers. The term “sexual selection”...
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More sex when couples split chores traditionally
U. WASHINGTON (US) — Married couples who split chores by traditional gender roles have sex more often than couples who share so-called men’s and women’s work.Previous research has suggested that...
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Trait by trait, sexes don’t differ much
U. ROCHESTER (US) — Forget Mars and Venus. Both men and women are from Earth, according to a new study that shows the sexes aren’t so dissimilar psychologically. From empathy and sexuality to science...
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Genetic ‘roulette’ gives tiny cells their sex
UC SANTA BARBARA (US) — A single-celled organism ends up with one of seven possible “mating types,” or sexes, in a process that scientists call “random.” By identifying the long-unknown mating-type...
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Binge eating may be based in biology
MICHIGAN STATE (US) — Female rats are much more likely to binge eat than male rats are, according to new research that provides some of the strongest evidence yet that biology plays a role in eating...
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Strong guys less willing to share wealth
UC SANTA BARBARA (US) — Upper body strength and socioeconomic status can predict men’s opinions on the redistribution of wealth, according to researchers. “The link between body size and aggressiveness...
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In person, both sexes fall for looks and money
U. TEXAS – AUSTIN (US) — Men and women put similar importance on the physical appeal and earning prospects of potential mates, say researchers. Women say they place a priority on a potential partner’s...
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Gut bacteria make some diseases skew female
U. CHICAGO (US) — Women are more likely to get a number of autoimmune diseases like lupus. The way gut microbes interact with sex hormones could be why. Intestinal bacteria already have been implicated...
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3D models connect DNA to facial features
Using 3D models, researchers are closer to connecting genetics with facial features. Eventually, they hope the findings will lead to predicting facial features from DNA evidence. “By jointly modeling...
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Extra females raise ‘divorce’ rate among birds
The ratio of males and females in bird populations affects the rates of divorce and infidelity, according to a new study. The study, which examined the pair bonding and mating behavior of 197 different...
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Night owls are less likely to get married
People who tend to stay up late and wake up late in the morning are different in many important ways from early risers, new research shows. “Night owls, both males and females, are more likely to be...
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Smell of male scientists may skew rodent studies
Scientists’ inability to replicate research findings using mice and rats has contributed to mounting concern over the reliability of such studies. Pain researchers may have uncovered one important...
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Fertility doesn’t make women want manly guys
Contrary to popular belief, women’s fertility and menstrual cycles don’t change which guys they find attractive. Over the last two decades, studies in reproductive biology and psychology have purported...
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Men focus more on ‘brand’ when judging art
Men and women focus on different aspects of art, report researchers: Men pay more attention to the artist’s background and authenticity, while women pay more attention to the art itself. A new study in...
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Does IBS cause men more social trouble?
A new study suggests that irritable bowel syndrome (IBS) causes more interpersonal difficulties for men than for women. The findings challenged the investigators’ expectations. “Our findings underscore...
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Mosquitoes prefer to bite male birds
Mosquitoes have a sweet tooth for male birds. When it’s time for a meal, they’ll bite males 64 percent of the time and females 36 percent of the time. Scientists say the findings may help understand...
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Who wants to settle down? Depends on the ‘market’
A lasting stereotype about sex is that men desire as many partners as possible, whereas women crave stability and commitment. That’s too simple, a new study suggests. What men and women want from...
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Does diet change iron levels in the brain?
New research links iron levels in the brain with diet, though the effects seem to differ for men and women. High brain iron levels have been associated with neurological diseases, including multiple...
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Gender differences are smaller than we think
Although gender plays a big part in our identities, new research finds men and woman aren’t as different as we tend to think. Gender stereotypes can influence beliefs and create the impression that the...
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