[kroh-muh-sohm] /ˈkroʊ məˌsoʊm/
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 size and X and Y for the female and male sex chromosomes respectively.
any of the microscopic rod-shaped structures that appear in a cell nucleus during cell division, consisting of nucleoprotein arranged into units (genes) that are responsible for the transmission of hereditary characteristics See also homologous chromosomes
1889, from German Chromosom, coined 1888 by German anatomist Wilhelm von Waldeyer-Hartz (1836-1921), from Latinized form of Greek khroma “color” (see chroma) + -some (3)). So called because the structures contain a substance that stains readily with basic dyes.
chromosome chro·mo·some (krō’mə-sōm’)
chro’mo·so’mal (-sō’məl) or chro’mo·so’mic (-sō’mĭk) adj.
A structure in all living cells that consists of a single molecule of DNA bonded to various proteins and that carries the genes determining heredity. In all eukaryotic cells, the chromosomes occur as threadlike strands in the nucleus. During cell reproduction, these strands coil up and condense into much thicker structures that are easily viewed under a microscope. Chromosomes occur in pairs in all of the cells of eukaryotes except the reproductive cells, which have one of each chromosome, and some red blood cells (such as those of mammals) that expel their nuclei. In bacterial cells and other prokaryotes, which have no nucleus, the chromosome is a circular strand of DNA located in the cytoplasm.
[sur-kuh m-stan-shuh l] /ˌsɜr kəmˈstæn ʃəl/ adjective 1. of pertaining to, or derived from : a circumstantial result. 2. of the nature of a ; secondary; incidental: of circumstantial importance. 3. dealing with or giving ; detailed; particular: a circumstantial report of a business conference. 4. pertaining to conditions of material welfare. /ˌsɜːkəmˈstænʃəl/ adjective 1. […]
[sahyt] /saɪt/ verb (used with object), cited, citing. 1. to quote (a passage, book, author, etc.), especially as an authority: He cited the Constitution in his defense. 2. to mention in support, proof, or confirmation; refer to as an example: He cited many instances of abuse of power. 3. to summon officially or authoritatively to […]
[sit-uh-zuh n, -suh n] /ˈsɪt ə zən, -sən/ noun 1. a native or naturalized member of a state or nation who owes allegiance to its government and is entitled to its protection (distinguished from ). 2. an inhabitant of a city or town, especially one entitled to its privileges or franchises. 3. an inhabitant, or […]
[si-vil-yuh n] /sɪˈvɪl yən/ noun 1. a person who is not on active duty with a military, naval, police, or fire fighting organization. 2. Informal. anyone regarded by members of a profession, interest group, society, etc., as not belonging; nonprofessional; outsider: We need a producer to run the movie studio, not some civilian from the […]