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Latest Sexual dimorphism Stories

2014-05-27 11:50:38

University of Pennsylvania School of Medicine Could give hints about male versus female risk for certain psychiatric disorders Puberty is the defining process of adolescent development, beginning a cascade of changes throughout the body, including the brain. Penn Medicine researchers have discovered that cerebral blood flow (CBF) levels decreased similarly in males and females before puberty, but saw them diverge sharply in puberty, with levels increasing in females while decreasing...

Seal Evolution Discovery And Sexual Dimorphism
2014-02-20 08:20:42

April Flowers for redOrbit.com - Your Universe Online Pinning down the answer to a widely-asked question is one of the most exciting things a researcher can do. For Thomas Cullen, who completed the research as part of his Master's degree at Carleton University, this experience came early in his career. Cullen, working with Canadian Museum of Nature paleontologist Dr. Natalia Rybczynski, made a ground-breaking discovery about pinnipeds — the suborder that makes up seals, sea lions, and...

Detailing The Evolution Of Plumage Patterns In Male, Female Birds
2013-12-19 14:06:31

Gerard LeBlond for redorbit.com - Your Universe Online Waterfowl such as ducks, geese and swans belong to the order Anseriformes. Game birds such as pheasants, partridges, hens and turkeys are known as the order Galliformes. The birds belonging to both of these orders are recognized not only for their meat, but also for the elegant display of their plumage. Some members within the orders show differences between male and female, known as sexual dimorphism. Such as with the mallard, the...

2013-11-22 11:16:19

UCL scientists have shown that there are widespread differences in how genes, the basic building blocks of the human body, are expressed in men and women's brains. Based on post-mortem adult human brain and spinal cord samples from over 100 individuals, scientists at the UCL Institute of Neurology were able to study the expression of every gene in 12 brain regions. The results are published today in Nature Communications. They found that the way that the genes are expressed in the...

Women Were Likely Responsible For Majority Of Ancient Cave Handprints
2013-10-16 04:56:04

[ Watch the Video: Hands On Cave Walls Were Mostly Female ] redOrbit Staff & Wire Reports - Your Universe Online Using a technique that can tell the gender of the person who left handprints on a cave wall based on various hand measurements, a Penn State anthropologist has discovered that the majority of these markings were made by women. Experts had long believed that these cave handprints, whether they were actually paint-dipped prints or stenciled, were made by men because the...

2013-08-16 10:09:08

The essence of male beauty is down to the way males use their genes rather than what genes they have, according to a new study into the sexual attractiveness of turkeys. Geneticists have long puzzled over why individuals of the same sex show a greater or lesser degree of sexual attractiveness. In other words - why are some people better looking than others when they're genetically similar? In a new study, published today in the journal PLoS Genetics, scientists turned to male wild...

2013-07-18 23:26:34

Without a doubt, “X” does make a difference. The Society for Women’s Health Research (SWHR) held its 4th annual "What a Difference an X Makes: The State of Women’s Health Research" scientific conference at the Pew Charitable Trust Conference Center, Washington DC, July 18th -19th; to increase awareness and urgency about the importance of sex differences in chronic disease prevention, diagnosis, and treatment, and to ultimately transform disease research to accelerate...

Extinct Moa Females Up To Three Times Larger Than Males
2013-04-10 13:30:01

Brett Smith for redOrbit.com - Your Universe Online Sexual dimorphism, in which male and females of the same species differ significantly in appearance, is fairly common among birds. Typically, the male of the species either towers over the female or is equipped with elaborate plumage, as in the case of the peacock. However, for New Zealand´s extinct, flightless giant moa, the roles were reversed, with the female often weighing three times as much as her male suitors....

2013-03-20 10:31:54

Study highlights brain changes that may underlie transition from aggressive to parental behavior Sexually naïve male mice respond differently to the chemical signals emitted by newborn pups than males that have mated and lived with pregnant females, according to a study published March 20 in The Journal of Neuroscience. The findings may help scientists to better understand the changes that take place in the brains of some mammals during the transition into parenthood. Sex...

New Understanding Of Why Female Milne-Edwards' Sifakas Outlive Males
2013-03-01 08:08:03

National Evolutionary Synthesis Center (NESCent) Researchers studying aging in an endangered lemur known as the Milne-Edwards' sifaka report that in old age, females are the safer sex. After observing these animals for more than two decades in the wild in Madagascar, co-author Patricia Wright of Stony Brook University had a hunch that females were living longer than their male counterparts. Females tend to outlive males in many animals, including humans. But in the Milne-Edwards'...


Latest Sexual dimorphism Reference Libraries

38_1df06e64c37f06d8ea8be66ed526be48
2009-02-27 16:03:37

The Greater Painted Snipe (Rostratula benghalensis) is a species of wading bird found in the marshes of Africa, India and southeast Asia (Sulawesi). Its preferred habitat are fringes of reed beds along shorelines of marshes, swamps, ponds and streams. The Greater Painted Snipe is not related to true snipes, and differs in habits, flight and appearance. This is a medium-sized bird with a long reddish-brown bill that is slightly downward curved at the tip. It has a unique white or pink eye...

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Word of the Day
lunula
  • A small crescent-shaped structure or marking, especially the white area at the base of a fingernail that resembles a half-moon.
This word is a diminutive of the Latin 'luna,' moon.
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