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Related to Autosomes: Down syndrome, meiosis


A chromosome that is not a sex chromosome.

au′to·so′mal (-sō′məl) adj.
au′to·so′mal·ly adv.


(Genetics) any chromosome that is not a sex chromosome
ˌautoˈsomal adj


(ˈɔ təˌsoʊm)

any chromosome other than a sex chromosome.
au`to•so′mal, adj.
au`to•so′mal•ly, adv.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.autosome - any chromosome that is not a sex chromosomeautosome - any chromosome that is not a sex chromosome; appear in pairs in body cells but as single chromosomes in spermatozoa
chromosome - a threadlike strand of DNA in the cell nucleus that carries the genes in a linear order; "humans have 22 chromosome pairs plus two sex chromosomes"
References in periodicals archive ?
In the nematode Caenorhabditis elegans, sex determination is a direct function of X-chromosome dosage, with XX being hermaphrodites if the ratio of X-chromosomes to autosomes (A) is balanced (2X/2A = 1), and X0 being male (Hodgkin 2002).
All experimental animals were genotyped with 165 microsatellite markers located throughout the pig autosomes and linkage map construction was also according to Cho et al [7].
Hermaphrodites have 5 pairs of autosomes and one pair of sex chromosomes (X), while males have only one sex chromosome and the same number of autosomes.
Translocations involving autosomes and the X chromosome with gonadal dysgenesis have been described by a few studies.
C-banding of mitotic metaphase revealed constitutive heterochromatin blocks (thin C-bands) in the paracentromeric region in most chromosomal elements, with the exception of one small pair of autosomes (thick C-bands).
Similar paralog ratio testing strategies have been used to detect autosomal trisomies and sex chromosome abnormalities by designing assays to target paralogs anchored on the relevant chromosomes with paired sequences on reference autosomes (4, 5, 29, 30).
The species of the genus Nannospalax are smaller, their karyotypes are extremely variable (2n = 36-62) and include acrocentric autosomes (Topachevskii 1969, Lyapunova et al.
The existence of Q-HRs variability in twelve Q-polymorphic loci of seven autosomes and the distal portion of the long arm of chromosome Y in populations is a well-established fact [1].
NHS test for affected families Defective genes can be caused by mutations in either the maternally-inherited mitochondrial genome (mtDNA) or more frequently, the genes located on the autosomes, the 23 pairs of chromosomes which are responsible for all traits and all other genetic diseases.
Regression was based on data from 84 F2 offspring for 96 microsatellites covering 19 autosomes with an average spacing of 20 cM (see Table S1).
This bivalent represented 7% of the complement, while each of the autosomes represented between 2% and 4.
The nonhomology could involve different autosomes involved in the fusion events giving rise to neo-Y chromosomes in each species.