- chromosomal sex
- sex as determined by the sex chromosome constitution in somatic cells, in humans being the XX (female) or the XY (male) genotype, without regard to phenotypic manifestations; called also genetic s.
Medical dictionary. 2011.
Medical dictionary. 2011.
Sex allocation — is the allocation of resources to male versus female reproduction in sexual species (Charnov 1982). Sex allocation depends upon the breeding system of a species, as well as how reproduction is carried out within each breeding system. Breeding… … Wikipedia
Sex linkage — is the phenotypic expression of an allele that is related to the chromosomal sex of the individual. This mode of inheritance is in contrast to the inheritance of traits on autosomal chromosomes, where both sexes have the same probability of… … Wikipedia
sex — /seks/, n. 1. either the male or female division of a species, esp. as differentiated with reference to the reproductive functions. 2. the sum of the structural and functional differences by which the male and female are distinguished, or the… … Universalium
Sex determination and differentiation (human) — Human sex determination refers to the processes by which an individual becomes either a male or female during development.The Jost ParadigmUnder typical circumstances, the sex of an individual will be determined and expressed through the… … Wikipedia
sex chromatin test — (for determination of chromosomal sex) examination of somatic cells for presence of a Barr body at the periphery of the nucleus; an index of the presence of two X chromosomes, as in a normal XX female, but also giving a positive result with… … Medical dictionary
Sex assignment — refers to the assigning (naming) of the biological sex at the birth of a baby.[1] In the majority of births, a relative, midwife, or physician inspects the genitalia when the baby is delivered, sees ordinary male or female genitalia, and declares … Wikipedia
Chromosomal translocation — of the 4th and 20th chromosome. In genetics, a chromosome translocation is a chromosome abnormality caused by rearrangement of parts between nonhomologous chromosomes. A gene fusion may be created when the translocation joins two otherwise… … Wikipedia
chromosomal disorder — Syndrome caused by chromosome abnormality. Normally, humans have 23 pairs of chromosomes, including one pair of sex chromosomes. Any variation from this pattern causes abnormalities. A chromosome may be duplicated (trisomy) or absent (monosomy);… … Universalium
Sex-determination system — A sex determination system is a biological system that determines the development of sexual characteristics in an organism. Most sexual organisms have two sexes. In many cases, sex determination is genetic: males and females have different… … Wikipedia
Sex — An organism s sex is defined by the gametes it produces: males produce male gametes (spermatozoa, or sperm) while females produce female gametes (ova, or egg cells); individual organisms which produce both male and female gametes are termed… … Wikipedia