somatic chromosome
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somatic chromosome — noun any chromosome that is not a sex chromosome; appear in pairs in body cells but as single chromosomes in spermatozoa • Syn: ↑autosome • Derivationally related forms: ↑autosomal (for: ↑autosome) • Hypernyms: ↑chromo … Useful english dictionary
Chromosome — For a non technical introduction to the topic, see Introduction to genetics. Diagram of a replicated and condensed metaphase eukaryotic chromosome. (1) Chromatid – one of the two identical parts of the chromosome after S phase. (2)… … Wikipedia
Somatic evolution in cancer — Somatic evolution is the accumulation of mutations in the cells of a body (the soma) during a lifetime, and the effects of those mutations on the fitness of those cells. Somatic evolution is important in the process of aging as well as the… … Wikipedia
Somatic cell — Somatic cells are any cells forming the body of an organism, as opposed to germline cells. In mammals, germline cells (also known as gametes ) are the spermatozoa and ova which fuse during fertilization to produce a cell called a zygote, from… … Wikipedia
chromosome number — n the usu. constant number of chromosomes characteristic of a particular kind of animal or plant * * * the number of chromosomes present in the somatic cells of an organism; the normal individual receives, at conception, one set of chromosomes… … Medical dictionary
chromosome — chromosomal, adj. chromosomally, adv. /kroh meuh sohm /, n. Genetics. any of several threadlike bodies, consisting of chromatin, that carry the genes in a linear order: the human species has 23 pairs, designated 1 to 22 in order of decreasing… … Universalium
Chromosome — A visible carrier of the genetic information. The 3 billion bp (base pairs) in the human genome are organized into 24 distinct, physically separate microscopic units called chromosomes. All genes are arranged linearly along the chromosomes. The… … Medical dictionary
Somatic mutation — A change in a gene or chromosome that occurs in a general body cell, as opposed to a germ cell, and so cannot be transmitted to children. A somatic mutation occurs in a single cell after the conception of the individual. That change is then… … Medical dictionary
Chromosome inversion, paracentric — A basic type of chromosome rearrangement. A segment that does not include the centromere (and so is paracentric) has been snipped out of a chromosome, turned through 180 degrees (inverted), and inserted right back into its original location in… … Medical dictionary
Chromosome inversion, pericentric — A basic type of chromosome rearrangement in which a segment that includes the centromere (and so is pericentric) has been snipped out of a chromosome, turned through 180 degrees (inverted), and inserted back into its original location in… … Medical dictionary
