| MDFD | map-dot-fingerprint dystrophy |
|---|---|
| Xi | inactive X Chromosome |
| CCA | cephalin cholesterol antigen; chick cell agglutination; chimpanzee coryza agent; choriocarcinoma; ci... |
| CH | case history; Chediak-Higashi [syndrome]; chiasma; Chinese hamster; chloral hydrate; cholesterol; Ch... |
| Ch | chest; Chido [antibody]; chief; child; choline; Christchurch [syndrome]; chromosome |
| CCR | Complex chromosome rearrangements |
|---|---|
| FTDP-17 | Frontotemporal dementia and Parkinsonism linked to chromosome 17 |
| FTDP-17 | Frontotemporal dementia with Parkinsonism linked to chromosome 17 |
| MAC | mammalian artificial chromosome |
| MMCT | Microcell-mediated chromosome transfer |
| contig map | <molecular biology> A map depicting the relative order of a linked library of small overlapping clones representing a complete chromosomal segment. (10 Nov 1998) |
|---|---|
| contiguous map | <molecular biology> A map depicting the relative order of a linked library of small overlapping clones representing a complete chromosomal segment. (10 Nov 1998) |
| cosmid map | <molecular biology> A physical map that includes a collection of bacteria containing cosmids that carry the DNA fragments under study. (10 Nov 1998) |
| cytogenetic map | A map in which the classical bonding pattern of a chromosome is shown. (05 Mar 2000) |
| sequence-tagged site map | A map representing the order and spacing of sequence-tagged sites within a stretch of DNA. (05 Mar 2000) |
| topographic map | <anatomy, neurology> The spatially ordered projection of neurons onto their target, for example in the retino tectal projection, retinal ganglion cell axons project along the optic nerve to the contralateral tectum where they ramify to form terminal arbors. The target sites of the terminal arbors are ordered: neurons from a specific region of the retina consistently project to a specific region of the tectum, forming a map of the retina on the tectum. (18 Nov 1997) |
| y map | The array of genes on the y chromosome. Once thought to be a genetic wasteland, the y now is known to contain at least 20 genes, some of them unique to the y including the male-determining gene and male fitness genes that are active only in the testis and are thought responsible for the formation of sperm. Other genes on the y have counterparts on the x chromosome, are active in many body tissues and play crucial housekeeping roles with the cell. (12 Dec 1998) |
| fate map | <embryology> Diagram of an early embryo (usually a blastula) showing which tissues the cells in each region will give rise to (i.e. Their developmental fate). Fate maps are normally constructed by labelling small groups of cells in the blastula with vital dyes and seeing which tissues are stained when the embryo develops. (18 Nov 1997) |
| linkage map | <genetics> A map of the relative positions of genetic loci on a chromosome, determined onthe basis of how often the loci are inherited together. Distance ismeasured in centimorgans (cM). (09 Oct 1997) |
| 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) |