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Sexual dimorphism in birds: why are there so many different forms of dimorphism?

open access: yesProceedings of the Royal Society B: Biological Sciences, 1998
Variation in the extent of sexual dimorphism among bird species is traditionally attributed to differences in social mating system. However, there are many different forms of dimorphism among birds, and not all of them show an obvious correlation with ...
Ian P F Owens, Ian R Hartley
exaly   +2 more sources
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Sexual dimorphism inSebastes

Environmental Biology of Fishes, 1991
Sexual dimorphism and factors that may cause it were investigated in 34 species of the genusSebastes. Sexual dimorphism in standard length and morphometric characters are fairly common in rockfish. In many species males are shorter than females. However in males head length, width of orbit, interorbital width, length of upper jaw, longest pectoral fin ...
William H. Lenarz   +1 more
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Polyploidy and Gender Dimorphism

Science, 2001
Miller and Venable ([1][1]) claimed that polyploidy is a “trigger of unrecognized importance” for the evolution of gender dimorphism, an idea originally proposed by Jennings ([2][2]) and Baker ([3][3]).
J, Brunet, A, Liston
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Mammalian sexual dimorphism

Animal Reproduction Science, 2012
Sexual dimorphisms (SDs) have evolved in mammals to assure greater reproductive success for individuals, usually males. Secondary sexual characteristics (SSC) developed to further this objective, tending to be more pronounced in species which are polygynous, diurnal and open-habitat dwellers.
McPherson, F.J., Chenoweth, P.J.
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Dimorphic CeZnPO and PrZnPO.

ChemInform, 2006
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Hannes Lincke   +2 more
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LHRH and Sexual Dimorphism

Annals of the New York Academy of Sciences, 1998
Abstract: An increasing amount of evidences suggests that galanin plays an important role in the regulation of reproduction in the rat. Galanin is colocalized with luteinizing hormone‐releasing hormone (LHRH) in a subset of LHRH neurons, and the pattern of coexpression is sexually dimorphic, with a higher incidence of colocalization and level of ...
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On the expression of sex dimorphism

American Journal of Physical Anthropology, 1981
AbstractA procedure is developed and presented for the calculation of sex dimorphism in quantitative variates. Instead of expressing sex dimorphism by the male X̄/female X¯ ratio, it deletes the area of overlap of the two curves and provides the proportion of males and females in terms of the areas under each curve.
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Dimorphism and Patellofemoral Disorders

Orthopedic Clinics of North America, 2006
Sex is defined as the classification of living things according to their chromosomal compliment. Gender is defined as a person's self-representation as a male or female or how social institutions respond to that person on the basis of his or her gender presentation.
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Sexual dimorphism of hypertension

Current Opinion in Nephrology and Hypertension, 1996
A sexually dimorphic pattern of blood pressure, in which the male develops higher blood pressure than the age-matched female, has been observed both in human subjects and in laboratory animals. The mechanism(s) of this sexual dimorphism of blood pressure are not completely understood.
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