sexual dimorphism


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Related to sexual dimorphism: sexual selection, Stabilizing selection

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 ?
Sexual dimorphism within osteological dimensions is prominent throughout both extant and extinct populations.
However, as martens were only sampled during early winter, low prey species abundance and diversity may increase dietary overlap and potentially intraspecific competition regardless of sexual dimorphism.
Perhaps the femoral spines function for crypsis and/or predator defense (Bedford 1978), and/or their sexual dimorphism is an evolutionary relic of other closely related species.
By offering sexual selection theory as a lens through which to examine dress codes in the workplace, I do not mean to suggest that it answers every question nor that it provides normative answers (27) simply based on analogy to evolutionary explanations of ornamentation and sexual dimorphism.
Clarias species exhibit sexual dimorphism and identified when fish reach a length of 20cm, (Sidthimunka, 1972).
Key words: sexual dimorphism, spectrometry, ultraviolet reflectance, plumage color, avian, blue-fronted Amazon parrot, Amazona aestiva
Another interesting finding is sexual dimorphism, with difference in height being more marked in females," she said.
SEXUAL SELECTION: EXAMPLES OF SEXUAL DIMORPHISM AND MALE-MALE COMPETITION
In the end Ball ferrets out the truth, but not before artfully briefing the reader on sexual dimorphism, sex-change operations, transsexual psychology, and Charleston mores, He has written a polymorphously entertaining exopse.
Garr regards the lesser deities as exclusively male, denying that the reference to sexual dimorphism ("male and female") is part of the divine image and likeness (but see below).
Sexual dimorphism is certainly a factor, but it is not a unique factor, and when 'adam sees the being, it is the "bone of my bones, and flesh of my flesh" that he immediately embraces; it is this "sameness" that will bring companionship and community.
In order to address this question, we are modeling thermal energy flux in both male and female crabs of different species that have varying degrees of sexual dimorphism.