sexual dimorphism

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Related to Sexually dimorphic: Sexually dimorphic nucleus, Sexually monomorphic

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 ?
2008) Sexually dimorphic gastrin releasing peptide system in the spinal cord controls male reproductive functions.
Bite-force performance and head shape in a sexually dimorphic crevice-dwelling lizard, the common chuckwalla [Sauromalus ater (= obesus)].
The results of the males and females 2D:4D ratios however confirmed that digit ratios (2D:4D) are a sexually dimorphic phenomenon.
Manicomyia includes two sexually dimorphic species (Figs 1-4).
Testosterone and estrogen control sexually dimorphic behaviors in vertebrate species, we've known that for a long time that they control behaviors at a very large-scale level," study researcher Nirao Shah, of the University of California, San Francisco, said.
Third antennal segment sexually dimorphic, uniform slender and slightly swollen at tip in male, apically clavate in female; hemelytra subparallel to elongate-oval, apically rounded in macropters, apically acuminate and divergent in brachypters Melanorhopala Stal
ABSENCE OF SEXUALLY DIMORPHIC SECOND TO FOURTH (2D:4D) TOE LENGTH RATIOS IN STRIPED NEWTS.
Many bird species cannot be sexed by any morphological trait, not differing in morphological external characteristics, while others are sexually dimorphic only in the adult phase (Ellegren & Sheldon 1997, Kahn et al.
Projections of the paraventricular nucleus of the hypothalamus to the sexually dimorphic lumbosacral region of the spinal cord.
For polygynous, sexually dimorphic mammals, where males are larger and disperse more readily than females, the latter models can be used to predict sex-ratio adjustments within different environmental contexts.
Whether sexually dimorphic immune responses during hantavirus infection cause differences in the severity of disease between men and women has not been investigated.

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