metacentric chromosome

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.

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]

metacentric chromosome

a chromosome having the CENTROMERE located about halfway along. Compare ACENTRIC CHROMOSOME.

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References in periodicals archive ?

3] fluorochrome staining showed interstitial marking on the long arm of the fourth pair of metacentric chromosomes for the 3 species, indicating that this region is rich in GC base pairs (Fig.

Banding patterns of three leafcutter ant species of the genus Atta (Formicidae: Myrmicinae) and chromosomal inferences

C-bands produced by barium hydroxide using propidium iodide were observed in telomeres of the short arms of a large metacentric chromosome (chromosome pair 3) and in the short arms of a submetacentric chromosome (chromosome pair 5).

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)

All observed karyotypes were characterized by a large number of small chromosomes and composed of 8 pairs of metacentric chromosomes, common to the populations of Ilheus, Belmonte and Una, plus a variable number of acrocentric chromosomes ranging between 37 and 38 pairs (Fig.

Studies on the karyotype of the ant Pachycondyla harpax (Formicidae: Ponerinae: Ponerini) in Southern Bahia, Brazil

For accessions with 2n=2x=12 chromosomes there is one marker metacentric chromosome pair and six subtelocentric chromosomes.

Chromosome Number and Karyotype Analysis of some Taxa of Vicia Genus (Fabaceae): Revision and Description

The ratio of the total length of metacentric chromosomes to that of the submetacentric chromosomes was calculated for both the parent species.

Karyological studies of the hybrid larvae of haliotis disversicolor supertexta female and haliotis discus discus male

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)

A metacentric chromosome with an interstitial band closer to the centromeric band than the telomeric band on the short arm of the chromosome with very few polymorphisms.

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)

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)

A high frequency of metacentric chromosomes was observed in the complements of the 12 accessions, which is indicated by the average values of the centromere indices (CI) and ratios obtained between the arms of the chromosomes (r) (Table 1).

Karyotypic characterization of Capsicum sp. accessions/Caracterizacao cariotipica de acessos de Capsicum sp

56 [micro]m) and metacentric chromosomes, with the exception of chromosome 2 that is submetacentric.

Karyotype characterization of Malpighia emarginata (Malpighiaceae)/Caracterizacao cariotipica de Malpighia emarginata (Malpighiaceae)