| SKAT | Sex Knowledge and Attitude Test |
|---|---|
| SLHR | sex-linked hypophosphatemic rickets |
| SLP | left sacroposterior [fetal position] [Lat. sacrolaeva posterior]; segmental limb systolic pressure; ... |
| SO | salpingo-oophorectomy; Schlatter-Osgood [test]; second opinion; sex offender; spheno-occipital [sync... |
| SR | sarcoplasmic reticulum; saturation recovery; scanning radiometer; screen; secretion rate; sedimentat... |
| sex pili | <cell biology> Fine filamentous projections (pili) on the surface of a bacterium that are important in conjugation. Often seem to be coded for by plasmids that confer conjugative potential on the host, in the case of the f plasmid, the F pili are 8-9nm diameter and several microns long, composed of pilin. Whether the pili merely serve to establish and maintain adhesive contact between the partners in conjugation or whether DNA is actually transferred through the central core of the pilus is still unresolved, although a simple adhesion role is more generally accepted. (18 Nov 1997) |
|---|---|
| sex preselection | Methods for control of genetic sex of offspring. (12 Dec 1998) |
| sex ratio | The number of males per 100 females. (12 Dec 1998) |
| sex reversal | A process whereby the sexual identity of an individual is changed from one sex to the other (e.g., by a combination of surgical, pharmacologic, and psychiatric procedures); it may also occur in the life history of pseudohermaphroditic individuals whose sex at birth was uncertain; initially reared as members of one gender or sex role, such individuals may, upon subsequent medical examination and advice, be reared thereafter as members of the opposite gender or sex role. (05 Mar 2000) |
| sex reversal, gonadal | Change from one sex to another with regard to gonadal development; may be induced or occurs naturally in some invertebrates. (12 Dec 1998) |
| sex role | The degree to which an individual acts out a stereotypical masculine or feminine role in everyday behaviour. Compare: gender role. (05 Mar 2000) |
| sex skin | The skin of the genital regions of the Macaca mulatta and other primates which becomes hyperaemic during estrus; at the same time the dermis becomes gelatinous and the epidermis thickened. (05 Mar 2000) |
| sex steroid-binding globulin | A protein that transports 65% of the testosterone in plasma. Synonym: sex steroid-binding globulin. (05 Mar 2000) |
| accessory chromosome | A chromosome existing without its normal homologous chromosome; at the reduction division of gametogenesis an accessory chromosome is likely to be included in one daughter cell and not in the other, but may be lost completely by lagging behind on the equatorial plate. Synonym: monosome, odd chromosome, unpaired allosome, unpaired chromosome. (05 Mar 2000) |
| acentric chromosome | A fragment of a chromosome lacking a centromere and unable to attach to the mitotic spindle, therefore unable to take part in the division of a nucleus and randomly distributed in daughter cells. Synonym: acentric fragment. (05 Mar 2000) |
| acrocentric chromosome | A chromosome with the centromere placed very close to one end so that the short arm is very small, often with a satellite. (05 Mar 2000) |
| balanced chromosome | <genetics> A chromosome which is unable to pair with its homologue and participate in homologus recombination during meiosis because it contains several inversion mutations (that is, has segments which have become flip-flopped). (09 Oct 1997) |
| B chromosome | <genetics> Small acentric chromosome, part of the normal genome of some races and species of plants. (18 Nov 1997) |
| bivalent chromosome | A pair of chromosome's temporarily united. (05 Mar 2000) |
| male chromosome complement | The large majority of males have a 46, xy chromosome complement (46 chromosomes including an x and a y chromosome). A minority of males have other chromosome constitutions such as 47,xxy (47 chromosomes including two x chromosomes and a y chromosome) and 47,xyy (47 chromosomes including an x and two y chromosomes). (12 Dec 1998) |