metacentric chromosome


Also found in: Dictionary, Thesaurus.
Related to metacentric chromosome: holocentric chromosome, submetacentric chromosome

met·a·cen·tric chro·mo·some

a chromosome with a centrally placed centromere that divides the chromosome into two arms of approximately equal length.
Farlex Partner Medical Dictionary © Farlex 2012

met·a·cen·tric chro·mo·some

(met'ă-sen'trik krō'mŏ-sōm)
A chromosome with a centrally placed centromere that divides the chromosome into two arms of approximately equal length.
[meta- + G. kentron, circle]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

metacentric chromosome

a chromosome having the CENTROMERE located about halfway along. Compare ACENTRIC CHROMOSOME.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
Mentioned in ?
References in periodicals archive ?
Telomeric C-bands were observed mostly in the telomeres of a metacentric chromosome and a submetacentric chromosome.
Cytogenetic characterization of the dwarf oyster Ostrea stentina (mollusca: bivalvia) and comparative karyological analysis within ostreinae
The few cytogenetically studied species of Pholcidae and other haplogyne families exhibit karyotypic peculiarities, such as predominantly metacentric chromosome morphology and X/XX sex determination chromosome system, that contrasts with those of Entelegynae.
Chromosomes of Crossopriza lyoni (Blackwall 1867), intraindividual numerical chromosome variation in Physocyclus globosus (Taczanowski 1874), and the distribution pattern of NORs (Araneomorphae, Haplogynae, Pholcidae)
sativa two different formulas were found in three Tunisian accessions with a metacentric chromosome marker in their chromosome complements.
Chromosome Number and Karyotype Analysis of some Taxa of Vicia Genus (Fabaceae): Revision and Description
The mean arm ratios indicated that this species has 16 pairs of clearly metacentric chromosomes (chromosome pairs 1-16; Table 2).
Karyotype and fluorescence in situ hybridization analyses of the telomere sequence on chromosomes of the top shell Turbo (Batillus) cornutus (archaeogastropoda, Turbinidae)
Another metacentric chromosome with terminal bands and interstitial bands on the short arms.
Chromosomal polymorphism as detected by C-banding patterns in Chilean alfalfa germplasm (1). (Cell Biology & Molecular Genetics)
(1964) based on the arm index (metacentric chromosomes, 1.0-1.7; submetacentric, 1.7-3.0; subtelocentric, 3.0-7.0; telocentric, 7.0-[infinity]).
Karyological studies of the hybrid larvae of haliotis disversicolor supertexta female and haliotis discus discus male
Another metacentric chromosome with a small terminal band and a prominent interstitial band on the short arm.
Distribution and characterization of heterochromatic DNA in the tetraploid African population alfalfa genome. (Cell Biology & Molecular Genetics)
cracherodii described for this region showed that these species are similar in the metacentric chromosome number equal to eight pairs (8M).
Karyotype analysis and chromosomal localization by fish of ribosomal DNA, telomeric [(TTAGGG).sub.N] and [(GATA).sub.N] repeats in Haliotis fulgens and H. corrugata (archeogastropoda: haliotidae)
luteus presents exclusively metacentric chromosomes, reinforcing that this last species is not closely related to the species with 2n[male] = 17.
Small pholcids (Araneae: Synspermiata) with big surprises: the lowest diploid number in spiders with monocentric chromosomes
Generally only one form of B chromosome is found, although variants can come in fairly frequently resulting in metacentric chromosomes, subtelocentric chromosomes, and minichromosomes (Jones and Houben, 2003).
Evolution of Maize Landraces in Southwestern China: Evidence from B Chromosomes
This is based on the assumption that Robertsonian fissions of metacentric chromosomes considerably increase haplotype diversity.
Review of chromosome races in blind mole rats (Spalax and Nannospalax)

Medical browser ?
Full browser ?