nonchromosomal

chromosome

[kroh-muh-sohm]
noun 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 size and X and Y for the female and male sex chromosomes respectively.

Origin:
1885–90; chromo- + -some3

chromosomal, adjective
chromosomally, adverb
interchromosomal, adjective
interchromosomally, adverb
nonchromosomal, adjective
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World English Dictionary
chromosome (ˈkrəʊməˌsəʊm)
 
n
See also homologous chromosomes 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
 
chromo'somal
 
adj
 
chromo'somally
 
adv

Collins English Dictionary - Complete & Unabridged 10th Edition
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Etymonline
Word Origin & History

chromosome
1889, from Ger. Chromosom, coined 1888 by Ger. anatomist Wilhelm von Waldeyer-Hartz (1836-1921), from Gk. khroma "color" + soma "body." So called because the structures contain a substance that stains readily with basic dyes.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

chromosome chro·mo·some (krō'mə-sōm')
n.

  1. A threadlike linear strand of DNA and associated proteins in the nucleus of animal and plant cells that carries the genes and functions in the transmission of hereditary information.

  2. A circular strand of DNA in bacteria and cyanobacteria that contains the hereditary information necessary for cell life.


chro'mo·so'mal (-sō'məl) or chro'mo·so'mic (-sō'mĭk) adj.

nonchromosomal non·chro·mo·som·al (nŏn'krō-mə-sō'məl)
adj.
Not situated on or involving a chromosome.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
chromosome   (krō'mə-sōm')  Pronunciation Key 


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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.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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