sexual dimorphism

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dimorphism

 [di-mor´fizm]
the quality of existing in two distinct forms. adj., adj dimor´phic, dimor´phous.
sexual dimorphism physical or behavioral differences associated with sex.
having some properties of both sexes, as in the early embryo and in some hermaphrodites.

sex·u·al di·mor·phism

the somatic differences within species between male and female individuals that arise as a consequence of sexual maturation; inclusive of, but not restricted to, the secondary sexual characteristics.
A physical dichotomy between males and females of a particular species

sex·u·al di·morph·ism

(sek'shū-ăl dī-mōr'fizm)
The somatic differences within species between male and female individuals that arise as a consequence of sexual maturation, including, but not restricted to, the secondary sexual characters.

sexual dimorphism

the presence in a population of two sexes each with a different PHENOTYPE, a classic example of a GENETIC POLYMORPHISM. The underlying mechanism varies in different organisms, but is often controlled by genes on special SEX CHROMOSOMES (see SEX DETERMINATION).

sex·u·al di·morph·ism

(sek'shū-ăl dī-mōr'fizm)
Somatic differences within species between male and female individuals that arise as a consequence of sexual maturation.

dimorphism

the quality of existing in two distinct forms.

sexual dimorphism
1. physical or behavioral differences associated with sex; males and females of the same species are different in appearance.
2. having some properties of both sexes, as in the early embryo and in some hermaphrodites.

sexual

pertaining to sex.

sexual behavior
includes masturbation, courtship, mating, estral display.
sexual cycle
estral cycle.
sexual differentiation
identification of the sex of a patient is done usually by an examination of external genitalia; preparation and examination of a karyotype is the preferred laboratory method.
sexual dimorphism
differences in structure or physical characteristics between males and females of the same species, e.g. horns in some breeds of sheep, feather coat color in many species of birds.
sexual intercourse
see mating.
sexual maturity
capable of mating. Occurs at different ages in different species and in different races and even breeds.
sexual receptivity
behavioral changes in female animals at the time of estrus; involves acceptance of male efforts at copulation and, in some species, actively seeking the male.
sexual rest
circumstances in which no sexual intercourse takes place.
References in periodicals archive ?
The purpose of this study was to investigate sex differences in the endorsement of symptoms of masculine depression with the recently developed Masculine Depression Scale (MDS; Magovcevic & Addis, 2008).
Lesley Stahl CBS News 60 Minutes Correspondent Wenger Award for Excellence in Communications Lesley Stahl was honored for educating viewers about the importance of sex differences in medical and scientific research in her 60 Minutes report: 'Sex Matters: Drugs can affect sexes differently' which contributed to a dramatic increase in awareness of the importance of sex differences to women's cardiovascular health.
The decline in the sex difference in thrill- and adventure-seeking scores could reflect declines in average fitness levels, which might have reduced people's interest in physically challenging activities," said lead author Dr.
The team focused on the preoptic area of the rat brain--"a place where you see a ton of sex differences," Lenz says.
There are also sex differences in liver metabolism, kidney function and certain gastric enzymes.
Hypotheses similar to these have been partly supported by previous event-related potential (ERP) and EEG studies investigating sex differences (but not college major) in MR performance (Gill & O'Boyle, 1997; Gootjes, Bruggeling, Magnee, & Van Strien, 2008; Rescher & Rappelsberger, 1999; Robert & Bell, 2000), as well as in other fMRI studies (Jordan, Wiistenberg, Heinze, Peters, & Kincke, 2002; Kucian, Loenneker, Dietrich, Martin, & Aster, 2005; Thomsen et al.
Increase sex differences research in basic science studies;
Brain storm; the flaws in the science of sex differences.
Since that time, research has found sex differences in the effects of several drugs such as alcohol, cocaine, and nicotine (Wiren et al.
Of special note are the chapters addressing the germane issues as sex differences in infancy and in social development.
There are many sex differences in brain structure and function (54-57).
In the meta- analysis of sex differences in verbal abilities in the United States by Hyde and Linn (1988) it was calculated that in pre-1973 studies girls had an advantage of 0.