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dimorphism

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dimorphism - The existence of two distinctly different types of individuals within a species. An obvious example is sexual dimorphism in mammals. [FAO]

News archive for dimorphism.

Kenya: Rethinking Human Origins  -  21 Aug 2007
AllAfrica.com,..."In gorillas, males are larger than females, and this sexual dimorphism is related to their strategy of having multiple mates," says co-author Susan Anton.

Sexual dimorphism in airway responsiveness to sex hormones in rabbits  -  Jul 31, 2007
AJP-Lung Physiology (subscription)TO THE EDITOR: Recently, Massaro and Massaro (4) demonstrated a sexual dimorphism of alveolar size in male and female adult rats and mice and that estrogen

African skulls find throws story of human evolution into disarray  -  Aug 8, 2007
Scotsman,The small size of the erectus skull is a sign of "sexual dimorphism", where males are much larger than females. This trait is related to social groupings of

Anthropologists split on what fossil find means about early humans  -  Aug 9, 2007
San Francisco Chronicle,Nor is the Leakey team's claim persuasive that their small Homo erectus skull shows the chimplike characteristics of sexual dimorphism, DeGusta said.

Finds test human origins theory  -  Aug 8, 2007
BBC Bulgaria,On average, modern humans display a low level of "sexual dimorphism", meaning that males are females do not differ physically as much as they do in other

New fossils rewrite human family tree  -  Aug 8, 2007
ABC Science Online,..."In gorillas, males are much larger than females and this sexual dimorphism is related to their strategy of having multiple mates," says co-author Susan

Fossil skull find might re-write history of human evolution  -  Aug 9, 2007
NewKerala.com,...'One way of reading that is that there is a lot of size difference between males and females, which would be a lot more sexual dimorphism than we previously

Kenyan fossils reveal early human evolution  -  Aug 9, 2007
Natural History Museum,Scientists have debated about the differences between male and female bodies, known as sexual dimorphism, in the species H. erectus.

Sisters in evolution  -  Aug 8, 2007
Australian Life Scientist,The find also sheds light on sexual dimorphism, in which the male of the species is significantly larger than the female, as with gorillas.

Fossils in Kenya Challenge Linear Evolution to Homo Sapiens  -  Aug 8, 2007
New York Times,Sexual dimorphism is much more striking in gorillas, and apparently also in erectus. “The new Kenyan fossil suggests that contrary to common belief,

2 Human Ancestors Probably Co-Existed  -  Aug 8, 2007
Forbes,According to the Leakeys, that could point to "sexual dimorphism" -- a species trait whereby males and females differ significantly in body size.

Implications of new early Homo fossils from Ileret, east of Lake ...  -  Aug 8, 2007
Nature.com (subscription),This degree of variation may well imply that H. erectus showed marked sexual dimorphism, rather than the reduced levels that characterize the derived

Fossils show women smaller than males  -  Aug 9, 2007
Reuters.uk,..."This sexual dimorphism is considered a primitive character because it occurs in other apes," she said, standing in front of the bones at Kenya's National

Fossils force evolution rethink  -  Aug 8, 2007
The Australian,Susan Antón, of New York University, said: “In gorillas, males are much larger than females, and this sexual dimorphism is related to their strategy of

Skull, jaw fossils offer new insight into human lineage  -  Aug 8, 2007
Los Angeles Times,The small H. erectus skull indicates that variability in skull size in that species -- called sexual dimorphism -- "was substantially greater than in modern

Fossils paint new picture of human evolution  -  Aug 8, 2007
Scientific AmericanThis diversity could mean that like gorillas, in which males have much larger skulls than females, Homo erectus might have exhibited sexual dimorphism,

News tips from the Journal of Neuroscience  -  Aug 14, 2007
EurekAlert (press release),...before their role during puberty and adulthood becomes manifest, gonadal hormones exert influence on the development of sexual dimorphism in the brain.

Latest dung analysis to hone Addo research  -  Aug 13, 2007
The Herald Eastern Cape,Another focus of research on Addo‘s elephants was on the sexual dimorphism of the juveniles. From as young as two years, male and female elephants begin to

That was the week that was  -  Aug 10, 2007
Australian Life Scientist,For the more vulgar among us the speculations on sexual dimorphism that the discovery has raised are equally as interesting as the great big chunk of

Paleoanthropologists Disown Homo habilis from Our Direct Family Tree  -  Aug 9, 2007
Discovery Institute,...reduced sexual dimorphism, long limbs and modern body proportions that it is hard at present to identify its immediate ancestry in east Africa.

Breeding Nannostomus mortenthaleri  -  Aug 2, 2007
Practical Fishkeeping,It shows less sexual dimorphism, apart from when in breeding condition, and is therefore very difficult to sex, except during the spawning period,

My Ex-Gay Life :: Dissecting Reparative Therapy  -  Jul 25, 2007
EDGE Boston,...initially thanks to studies in the 1990s on gender dimorphism, wherein the brains of homosexuals and heterosexuals were analyzed for differences;

Neuroimaging and other neurobiological indices in schizophrenia ...  -  Jul 31, 2007
British Journal of Psychiatry (subscription),...by 3D laser scanning and geometric morphometrics in relation to sexual dimorphism in cerebral-craniofacial morphogenesis and cognitive function.

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